Revert "Update all Angular libs (run update_all.sh)."

third_party/pkg/angular/lib/formatter/json.dart

Index: third_party/pkg/angular/lib/formatter/json.dart
diff --git a/third_party/pkg/angular/lib/formatter/json.dart b/third_party/pkg/angular/lib/formatter/json.dart
deleted file mode 100644
index 8bc45666d835ae38ea85a0f518ad7382bc3f2a10..0000000000000000000000000000000000000000
--- a/third_party/pkg/angular/lib/formatter/json.dart
+++ /dev/null
@@ -1,14 +0,0 @@
-part of angular.formatter_internal;
-
-/**
- * Allows you to convert a JavaScript object into JSON string. This formatter is
- * mostly useful for debugging.
- *
- * Usage:
- *
- *     {{ json_expression | json }}
- */
-@Formatter(name:'json')
-class Json implements Function {
-  String call(jsonObj) => JSON.encode(jsonObj);
-}