Revert "dart2js cps: 'is' checks on types with type arguments."

pkg/compiler/lib/src/js_backend/codegen/glue.dart

Index: pkg/compiler/lib/src/js_backend/codegen/glue.dart
diff --git a/pkg/compiler/lib/src/js_backend/codegen/glue.dart b/pkg/compiler/lib/src/js_backend/codegen/glue.dart
index cb87354e609e6cc853493ff01f70df3b8b687bbc..c44da0ea6afe199db3e24700ae45a9110af4fe4b 100644
--- a/pkg/compiler/lib/src/js_backend/codegen/glue.dart
+++ b/pkg/compiler/lib/src/js_backend/codegen/glue.dart
@@ -171,10 +171,6 @@ class Glue {
     return _backend.getSetRuntimeTypeInfo();
   }
 
-  FunctionElement getCheckSubtype() {
-    return _backend.getCheckSubtype();
-  }
-
   js.Expression getRuntimeTypeName(ClassElement cls) {
     return js.string(_namer.runtimeTypeName(cls));
   }
@@ -212,15 +208,7 @@ class Glue {
     return _backend.namer.operatorIsType(type);
   }
 
-  String getTypeSubstitutionTag(ClassElement element) {
-    return _backend.namer.substitutionName(element);
-  }
-
   bool operatorEqHandlesNullArgument(FunctionElement element) {
     return _backend.operatorEqHandlesNullArgument(element);
   }
-
-  bool hasStrictSubtype(ClassElement element) {
-    return _compiler.world.hasAnyStrictSubtype(element);
-  }
 }