Remove ElementEnvironment.getCallStructure

pkg/compiler/lib/src/resolution/resolution_strategy.dart

Index: pkg/compiler/lib/src/resolution/resolution_strategy.dart
diff --git a/pkg/compiler/lib/src/resolution/resolution_strategy.dart b/pkg/compiler/lib/src/resolution/resolution_strategy.dart
index f2647fe418ac4a188e5e0d515f8eef7c3ceb75dd..7643bdd299c64ed10eb87477c77543acf1d874fc 100644
--- a/pkg/compiler/lib/src/resolution/resolution_strategy.dart
+++ b/pkg/compiler/lib/src/resolution/resolution_strategy.dart
@@ -436,16 +436,6 @@ class _CompilerElementEnvironment implements ElementEnvironment {
   }
 
   @override
-  CallStructure getCallStructure(MethodElement method) {
-    ResolutionFunctionType type = method.computeType(_resolution);
-    return new CallStructure(
-        type.parameterTypes.length +
-            type.optionalParameterTypes.length +
-            type.namedParameterTypes.length,
-        type.namedParameters);
-  }
-
-  @override
   bool isDeferredLoadLibraryGetter(MemberElement member) {
     return member.isDeferredLoaderGetter;
   }