Auto merge of #18838 - svanburen:remove_cssText, r=emilio

Remove cssText from CSSStyleValue

Removed from associated .rs and .webidl

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- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #17379 (github issue number if applicable).

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- [X] These changes do not require tests because they remove a property that previously had no tests associated with it.

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components/script/dom/cssstylevalue.rs

@@ -38,14 +38,6 @@ impl CSSStyleValueMethods for CSSStyleValue {
     fn Stringifier(&self) -> DOMString {
         DOMString::from(&*self.value)
     }
-
-    /// This attribute is no longer part of the `CSSStyleValue` interface,
-    /// but is still used in some examples.
-    /// https://github.com/GoogleChrome/houdini-samples/issues/16
-    // check-tidy: no specs after this line
-    fn CssText(&self) -> DOMString {
-        self.Stringifier()
-    }
 }
 
 impl CSSStyleValue {

components/script/dom/webidls/CSSStyleValue.webidl

@@ -7,8 +7,4 @@
 [Pref="dom.worklet.enabled", Exposed=(Worklet)]
 interface CSSStyleValue {
     stringifier;
-    // static CSSStyleValue? parse(DOMString property, DOMString cssText);
-    // static sequence<CSSStyleValue>? parseAll(DOMString property, DOMString cssText);
-    // This is a deprecated property, it's not in the spec any more but is used in houdini-samples
-    readonly attribute DOMString cssText;
 };