[ios clean] Updates all BrowserCoordinator to the new rule

ios/shared/chrome/browser/coordinator_context/coordinator_context.mm

Index: ios/shared/chrome/browser/coordinator_context/coordinator_context.mm
diff --git a/ios/shared/chrome/browser/coordinator_context/coordinator_context.mm b/ios/shared/chrome/browser/coordinator_context/coordinator_context.mm
deleted file mode 100644
index 2815174c90b3e8a42eae0bdfb9a013c68b236495..0000000000000000000000000000000000000000
--- a/ios/shared/chrome/browser/coordinator_context/coordinator_context.mm
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright 2017 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#import "ios/shared/chrome/browser/coordinator_context/coordinator_context.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-@implementation CoordinatorContext
-
-@synthesize baseViewController = _baseViewController;
-@synthesize animated = _animated;
-
-- (instancetype)init {
-  self = [super init];
-  if (self) {
-    _animated = YES;
-  }
-  return self;
-}
-
-@end