Get rid of support for string interpolation in #import strings.

vm/dart_api_impl.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_api.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart.h"
@@ skipping 3719 matching lines @@
 
 DART_EXPORT Dart_Handle Dart_SetLibraryTagHandler(
     Dart_LibraryTagHandler handler) {
   Isolate* isolate = Isolate::Current();
   CHECK_ISOLATE(isolate);
   isolate->set_library_tag_handler(handler);
   return Api::Success(isolate);
 }
 
 
-DART_EXPORT Dart_Handle Dart_SetImportMap(Dart_Handle import_map) {
-  Isolate* isolate = Isolate::Current();
-  DARTSCOPE(isolate);
-  const Array& mapping_array = Api::UnwrapArrayHandle(isolate, import_map);
-  if (mapping_array.IsNull()) {
-    RETURN_TYPE_ERROR(isolate, import_map, Array);
-  }
-  isolate->object_store()->set_import_map(mapping_array);
-  return Api::Success(isolate);
-}
-
-
 // NOTE: Need to pass 'result' as a parameter here in order to avoid
 // warning: variable 'result' might be clobbered by 'longjmp' or 'vfork'
 // which shows up because of the use of setjmp.
 static void CompileSource(Isolate* isolate,
                           const Library& lib,
                           const String& url,
                           const String& source,
                           RawScript::Kind kind,
                           Dart_Handle* result) {
   bool update_lib_status = (kind == RawScript::kScriptTag ||
@@ skipping 424 matching lines @@
 DART_EXPORT void Dart_InitPerfEventsSupport(Dart_FileWriterFunction function) {
   Dart::set_perf_events_writer(function);
 }
 
 
 DART_EXPORT void Dart_InitFlowGraphPrinting(Dart_FileWriterFunction function) {
   Dart::set_flow_graph_writer(function);
 }
 
 }  // namespace dart