Revert "Added for-loop variable tracking and regular closures/initializers captured variable tracki…

pkg/compiler/lib/src/kernel/element_map_impl.dart

Index: pkg/compiler/lib/src/kernel/element_map_impl.dart
diff --git a/pkg/compiler/lib/src/kernel/element_map_impl.dart b/pkg/compiler/lib/src/kernel/element_map_impl.dart
index 5c2f8a50336368abbf3c233b47d189a6e0137921..fc663e4fd02d2c885c3808680ae67f60ed7ae59d 100644
--- a/pkg/compiler/lib/src/kernel/element_map_impl.dart
+++ b/pkg/compiler/lib/src/kernel/element_map_impl.dart
@@ -774,9 +774,6 @@ class KernelToElementMapImpl extends KernelToElementMapForImpactImpl
 
   ir.Class getKernelClass(KClass entity) => _classEnvs[entity.classIndex].cls;
 
-  ir.Member getKernelMember(KMember entity) =>
-      _memberList[entity.memberIndex].node;
-
   bool hasConstantFieldInitializer(covariant KField field) {
     _FieldData data = _memberList[field.memberIndex];
     return getFieldConstantValue(data.node) != null;
@@ -1833,10 +1830,7 @@ class JsKernelToElementMap extends KernelToElementMapBase
 
   @override
   Local getLocalFunction(ir.TreeNode node) {
-    // TODO(efortuna, johnniwinther): This function should not be called once
-    // the K + J element situation has been properly sorted out. Ultimately this
-    // should throw.
-    return _elementMap.getLocalFunction(node);
+    throw new UnsupportedError("JsKernelToElementMap.getLocalFunction");
   }
 
   @override