diff --git a/src/test/content/test_childnodes.html b/src/test/content/test_childnodes.html
deleted file mode 100644
index 205a6124959..00000000000
--- a/src/test/content/test_childnodes.html
+++ /dev/null
@@ -1,31 +0,0 @@
-<html>
-<head>
-  <title></title>
-  <script src="harness.js"></script>
-</head>
-<body>
-  <script>
-    var elem = document.createElement("p");
-    is(elem.childNodes.length, 0);
-
-    var children = elem.childNodes;
-    var child = document.createElement("p");
-    elem.appendChild(child);
-
-    is(elem.childNodes.length, 1);
-    is(elem.childNodes[0], child);
-
-    var child2 = document.createElement("p");
-    elem.appendChild(child2);
-
-    is_in(1, children);
-    is(children.length, 2);
-    is(children.item(1), child2);
-
-    is_not_in(2, children);
-    is(children.item(2), null);
-
-    finish();
-  </script>
-</body>
-</html>
diff --git a/src/test/content/test_document_createElementNS.html b/src/test/content/test_document_createElementNS.html
deleted file mode 100644
index 68b0447639f..00000000000
--- a/src/test/content/test_document_createElementNS.html
+++ /dev/null
@@ -1,33 +0,0 @@
-<!DOCTYPE html>
-<html>
-    <head>
-        <script src="harness.js"></script>
-        <script id="script">
-            // test1: createElementNS
-            {
-                var htmlElt = document.createElementNS("http://www.w3.org/1999/xhtml", "p");
-                is_not(htmlElt, null, "test1-0: createElementNS");
-                is_a(htmlElt, Element, "test1-1: createElementNS");
-                is_a(htmlElt, HTMLElement, "test1-2: createElementNS");
-                is_a(htmlElt, HTMLParagraphElement, "test1-3: createElementNS");
-                is(htmlElt.namespaceURI, "http://www.w3.org/1999/xhtml", "test1-4: createElementNS");
-
-                var otherNsElt = document.createElementNS("http://www.example.org/dummy", "p");
-                is_not(otherNsElt, null, "test1-5: createElementNS");
-                is_a(otherNsElt, Element, "test1-6: createElementNS");
-                is_not_a(otherNsElt, HTMLElement, "test1-7: createElementNS");
-                is(otherNsElt.namespaceURI, "http://www.example.org/dummy", "test1-8: createElementNS");
-            }
-            // test2: Node.namespaceURI
-            {
-                is(document.namespaceURI, undefined, "test2.0: createElementNS");
-                is(document.documentElement.namespaceURI, "http://www.w3.org/1999/xhtml", "test2.1: createElementNS");
-                var scriptElt = document.getElementById("script");
-                is(scriptElt.firstChild.namespaceURI, undefined, "test2.2: createElementNS");
-                is(scriptElt.nextSibling.namespaceURI, undefined, "test2.3: createElementNS");
-            }
-
-            finish();
-        </script><!-- this is a comment -->
-    </head>
-</html>
diff --git a/src/test/content/test_document_createProcessingInstruction.html b/src/test/content/test_document_createProcessingInstruction.html
deleted file mode 100644
index e6d8384e144..00000000000
--- a/src/test/content/test_document_createProcessingInstruction.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!DOCTYPE html>
-<html>
-    <head>
-        <script src="harness.js"></script>
-        <script>
-            // test1: createProcessingInstruction
-            {
-                var pi = document.createProcessingInstruction("xml-stylesheet", "href=\"mycss.css\" type=\"text/css\"");
-                is_not(pi, null, "test1-0: createProcessingInstruction");
-                is_a(pi, ProcessingInstruction, "test1-1: createProcessingInstruction");
-                is(pi.target, "xml-stylesheet", "test1-2: createProcessingInstruction");
-                is(pi.data, "href=\"mycss.css\" type=\"text/css\"", "test1-3: createProcessingInstruction");
-            }
-
-            finish();
-        </script>
-    </head>
-</html>
diff --git a/src/test/content/test_document_doctype.html b/src/test/content/test_document_doctype.html
deleted file mode 100644
index bf9f1999243..00000000000
--- a/src/test/content/test_document_doctype.html
+++ /dev/null
@@ -1,24 +0,0 @@
-<!-- comment -->
-<!DOCTYPE html>
-<html>
-    <head>
-        <script src="harness.js"></script>
-        <script>
-            // test1: document with doctype
-            {
-                is_not(document.doctype, document.firstChild, "test1-0, document with doctype");
-                is_not(document.doctype, null, "test1-1, document with doctype");
-                is_a(document.doctype, DocumentType, "test1-2, document with doctype");
-            }
-
-            // test2: empty document
-            {
-                var newdoc = new Document();
-                newdoc.appendChild(newdoc.createElement("html"));
-                is(newdoc.doctype, null, "test2-0, empty document");
-            }
-
-            finish();
-        </script>
-    </head>
-</html>
diff --git a/src/test/content/test_document_importNode.html b/src/test/content/test_document_importNode.html
deleted file mode 100644
index 78cc0fa6ba6..00000000000
--- a/src/test/content/test_document_importNode.html
+++ /dev/null
@@ -1,36 +0,0 @@
-<!DOCTYPE html>
-<html>
-    <head>
-        <script src="harness.js"></script>
-        <script>
-            let doc = document.implementation.createHTMLDocument("title");
-            is_not(doc, null);
-
-            let foo = document.getElementById("foo");
-            is(foo.ownerDocument, document);
-
-            let imported_foo = doc.importNode(foo); // deep = false
-            is(imported_foo.parentNode, null);
-            is(imported_foo.ownerDocument, doc);
-            is(imported_foo.childNodes.length, 0);
-
-            imported_foo = doc.importNode(foo, true);
-            is(imported_foo.parentNode, null);
-            is(imported_foo.ownerDocument, doc);
-            is(imported_foo.childNodes.length, 1);
-
-            let bar = document.createElement("div");
-            bar.appendChild(document.createElement("div"));
-
-            imported_bar = doc.importNode(bar, true);
-            is(imported_bar.parentNode, null);
-            is(imported_bar.ownerDocument, doc);
-            is(imported_bar.childNodes.length, 1);
-
-            finish();
-        </script>
-    </head>
-    <body>
-        <div id="foo"><div id="bar"></div></div>
-    </body>
-</html>
diff --git a/src/test/content/test_exception.html b/src/test/content/test_exception.html
deleted file mode 100644
index b2cfda177d4..00000000000
--- a/src/test/content/test_exception.html
+++ /dev/null
@@ -1,6 +0,0 @@
-<!doctype html>
-<script src="harness.js"></script>
-<script>
-should_throw(function() { document.createElement("1foo") });
-finish();
-</script>
diff --git a/src/test/content/test_getElementsByTagName.html b/src/test/content/test_getElementsByTagName.html
deleted file mode 100644
index 34d31d0e318..00000000000
--- a/src/test/content/test_getElementsByTagName.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<html>
-<head>
-<script src="harness.js"></script>
-<script>
-var elems = document.getElementsByTagName('div');
-is(elems.length, 2);
-let elem = elems[0];
-is(elem.nodeType, 1);
-is_a(elem, HTMLDivElement);
-is(elem.tagName, "DIV");
-finish();
-</script>
-</head>
-<body>
-    <div>div one</div>
-    <div>div two</div>
-</body>
-</html>
