Remove DOMImplementation::getFeature() (#15233)

RFC: https://wiki.php.net/rfc/deprecations_php_8_4#remove_domimplementationgetfeature_feature_version

Author: nielsdos

NEWS

@@ -14,6 +14,7 @@ PHP                                                                        NEWS
   . Fixed bug GH-15192 (Segmentation fault in dom extension
     (html5_serializer)). (nielsdos)
   . Deprecated DOM_PHP_ERR constant. (nielsdos)
+  . Removed DOMImplementation::getFeature(). (nielsdos)
 
 - PHPDBG:
   . array out of bounds, stack overflow handled for segfault handler on windows.

UPGRADING

@@ -761,6 +761,10 @@ PHP 8.4 UPGRADE NOTES
 - Date:
   . The class constants are typed now.
 
+- DOM:
+  . Removed DOMImplementation::getFeature().
+    RFC: https://wiki.php.net/rfc/deprecations_php_8_4#remove_domimplementationgetfeature_feature_version
+
 - Intl:
   . The class constants are typed now.
   . The behaviour of Intl class has been normalized to always throw Error

ext/dom/domimplementation.c

@@ -415,21 +415,4 @@ PHP_METHOD(Dom_Implementation, createHTMLDocument)
 }
 /* }}} */
 
-/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#DOMImplementation3-getFeature
-Since: DOM Level 3
-*/
-PHP_METHOD(DOMImplementation, getFeature)
-{
-	size_t feature_len, version_len;
-	char *feature, *version;
-
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss", &feature, &feature_len, &version, &version_len) == FAILURE) {
-		RETURN_THROWS();
-	}
-
-	zend_throw_error(NULL, "Not yet implemented");
-	RETURN_THROWS();
-}
-/* }}} end dom_domimplementation_get_feature */
-
 #endif

ext/dom/php_dom.stub.php

@@ -454,9 +454,6 @@ public function __wakeup(): void {}
 
     class DOMImplementation
     {
-        /** @tentative-return-type */
-        public function getFeature(string $feature, string $version): never {}
-
         /** @tentative-return-type */
         public function hasFeature(string $feature, string $version): bool {}