Auto merge of #24300 - CYBAI:lt-cleanup, r=jdm

Remove unused checking in GetResponseXML

We've supported [Exposed] so no need to check the global scope type!

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes do not require tests because it just removes an unused checking. Also, those tests marked as `PASS` in #10573 should still pass.

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components/script/dom/xmlhttprequest.rs

@@ -935,12 +935,6 @@ impl XMLHttpRequestMethods for XMLHttpRequest {
 
     // https://xhr.spec.whatwg.org/#the-responsexml-attribute
     fn GetResponseXML(&self) -> Fallible<Option<DomRoot<Document>>> {
-        // TODO(#2823): Until [Exposed] is implemented, this attribute needs to return null
-        //              explicitly in the worker scope.
-        if self.global().is::<WorkerGlobalScope>() {
-            return Ok(None);
-        }
-
         match self.response_type.get() {
             XMLHttpRequestResponseType::_empty | XMLHttpRequestResponseType::Document => {
                 // Step 3