Rename import after moving file.

Fixes error in commit of
https://dart-review.googlesource.com/c/sdk/+/96081

Change-Id: I628de76467ef8696f1c83d919c00821ccedfb852
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/97222
Reviewed-by: William Hesse <whesse@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
diff --git a/pkg/compiler/lib/src/kernel/dart2js_target.dart b/pkg/compiler/lib/src/kernel/dart2js_target.dart
index c942dcc..29361f8 100644
--- a/pkg/compiler/lib/src/kernel/dart2js_target.dart
+++ b/pkg/compiler/lib/src/kernel/dart2js_target.dart
@@ -10,7 +10,6 @@
 import 'package:kernel/core_types.dart';
 import 'package:kernel/class_hierarchy.dart';
 import 'package:kernel/target/targets.dart';
-import 'package:kernel/transformations/constants.dart' show NumberSemantics;
 import 'invocation_mirror_constants.dart';
 
 const Iterable<String> _allowedDartSchemePaths = const <String>[