Remove ElementEnvironment.getCallStructure

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 5ca213c6512e5b7f57a80556edbc61f8c6d1a9e3..1d2326d4e1705dcf241bb87c623342a12b42a0c3 100644
--- a/pkg/compiler/lib/src/kernel/element_map_impl.dart
+++ b/pkg/compiler/lib/src/kernel/element_map_impl.dart
@@ -30,7 +30,6 @@ import '../native/native.dart' as native;
 import '../native/resolver.dart';
 import '../ordered_typeset.dart';
 import '../ssa/kernel_impact.dart';
-import '../universe/call_structure.dart';
 import '../universe/world_builder.dart';
 import '../util/util.dart' show Link, LinkBuilder;
 import 'element_map.dart';
@@ -881,20 +880,12 @@ class _MemberData {
 class _FunctionData extends _MemberData {
   final ir.FunctionNode functionNode;
   FunctionType _type;
-  CallStructure _callStructure;
 
   _FunctionData(ir.Member node, this.functionNode) : super(node);
 
   FunctionType getFunctionType(KernelToElementMapImpl elementMap) {
     return _type ??= elementMap.getFunctionType(functionNode);
   }
-
-  CallStructure get callStructure {
-    return _callStructure ??= new CallStructure(
-        functionNode.positionalParameters.length +
-            functionNode.namedParameters.length,
-        functionNode.namedParameters.map((d) => d.name).toList());
-  }
 }
 
 class _ConstructorData extends _FunctionData {
@@ -1105,12 +1096,6 @@ class KernelElementEnvironment implements ElementEnvironment {
   }
 
   @override
-  CallStructure getCallStructure(KFunction function) {
-    _FunctionData data = elementMap._memberList[function.memberIndex];
-    return data.callStructure;
-  }
-
-  @override
   bool isDeferredLoadLibraryGetter(KMember member) {
     // TODO(johnniwinther): Support these.
     return false;