Remove Angular support from the analyzer and analysis_server packages.

pkg/analysis_server/lib/src/services/search/search_engine_internal.dart

Index: pkg/analysis_server/lib/src/services/search/search_engine_internal.dart
diff --git a/pkg/analysis_server/lib/src/services/search/search_engine_internal.dart b/pkg/analysis_server/lib/src/services/search/search_engine_internal.dart
index adbab3d4f1aab68d026b855b50590e50885e8d06..a94aa70b00ccc5873119b56a0107a377a4a06294 100644
--- a/pkg/analysis_server/lib/src/services/search/search_engine_internal.dart
+++ b/pkg/analysis_server/lib/src/services/search/search_engine_internal.dart
@@ -56,14 +56,7 @@ class SearchEngineImpl implements SearchEngine {
 
   @override
   Future<List<SearchMatch>> searchReferences(Element element) {
-    if (element.kind == ElementKind.ANGULAR_COMPONENT ||
-        element.kind == ElementKind.ANGULAR_CONTROLLER ||
-        element.kind == ElementKind.ANGULAR_FORMATTER ||
-        element.kind == ElementKind.ANGULAR_PROPERTY ||
-        element.kind == ElementKind.ANGULAR_SCOPE_PROPERTY ||
-        element.kind == ElementKind.ANGULAR_SELECTOR) {
-      return _searchReferences_Angular(element as AngularElement);
-    } else if (element.kind == ElementKind.CLASS) {
+    if (element.kind == ElementKind.CLASS) {
       return _searchReferences(element);
     } else if (element.kind == ElementKind.COMPILATION_UNIT) {
       return _searchReferences(element);
@@ -131,19 +124,6 @@ class SearchEngineImpl implements SearchEngine {
     return requestor.merge();
   }
 
-  Future<List<SearchMatch>> _searchReferences_Angular(AngularElement element) {
-    _Requestor requestor = new _Requestor(_index);
-    requestor.add(
-        element,
-        IndexConstants.ANGULAR_REFERENCE,
-        MatchKind.ANGULAR_REFERENCE);
-    requestor.add(
-        element,
-        IndexConstants.ANGULAR_CLOSING_TAG_REFERENCE,
-        MatchKind.ANGULAR_CLOSING_TAG_REFERENCE);
-    return requestor.merge();
-  }
-
   Future<List<SearchMatch>>
       _searchReferences_Constructor(ConstructorElement constructor) {
     _Requestor requestor = new _Requestor(_index);