Remove MIPS support

tools/gardening/lib/src/shard_data.dart

 // Copyright (c) 2017, 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.
 //
 // ----- Generated by create_shard_groups.dart, do not edit! -----
 
 part of gardening.shard2group;
 
 const Map<String, List<String>> shardGroups = const {
   'vm': const <String>[
     'vm-mac-debug-simdbc64-be',
     'vm-mac-release-simdbc64-be',
     'vm-linux-debug-x64-be',
     'vm-linux-release-x64-be',
     'vm-linux-debug-ia32-be',
     'vm-linux-release-ia32-be',
     'vm-mac-debug-x64-be',
     'vm-mac-release-x64-be',
     'vm-mac-debug-ia32-be',
     'vm-mac-release-ia32-be',
     'vm-win-debug-x64-be',
     'vm-win-release-x64-be',
     'vm-win-debug-ia32-be',
     'vm-win-release-ia32-be',
-    'vm-linux-debug-simmips-be',
-    'vm-linux-release-simmips-be',
     'vm-linux-debug-simarm-be',
     'vm-linux-release-simarm-be',
     'vm-linux-release-simarm64-be',
   ],
   'vm-app': const <String>[
     'app-linux-debug-x64-be',
     'app-linux-release-x64-be',
     'app-linux-product-x64-be',
   ],
   'vm-kernel': const <String>[
@@ skipping 136 matching lines @@
     'vm-linux-debug-ia32-dev',
     'vm-linux-release-ia32-dev',
     'vm-mac-debug-x64-dev',
     'vm-mac-release-x64-dev',
     'vm-mac-debug-ia32-dev',
     'vm-mac-release-ia32-dev',
     'vm-win-debug-x64-dev',
     'vm-win-release-x64-dev',
     'vm-win-debug-ia32-dev',
     'vm-win-release-ia32-dev',
-    'vm-linux-debug-simmips-dev',
-    'vm-linux-release-simmips-dev',
     'vm-linux-debug-simarm-dev',
     'vm-linux-release-simarm-dev',
     'vm-linux-release-simarm64-dev',
   ],
   'vm-kernel-dev': const <String>[
     'vm-kernel-linux-release-x64-dev',
     'vm-kernel-linux-debug-x64-dev',
   ],
   'vm-misc-dev': const <String>[
     'vm-win-debug-ia32-russian-dev',
@@ skipping 164 matching lines @@
     'vm-linux-debug-ia32-stable',
     'vm-linux-release-ia32-stable',
     'vm-mac-debug-x64-stable',
     'vm-mac-release-x64-stable',
     'vm-mac-debug-ia32-stable',
     'vm-mac-release-ia32-stable',
     'vm-win-debug-x64-stable',
     'vm-win-release-x64-stable',
     'vm-win-debug-ia32-stable',
     'vm-win-release-ia32-stable',
-    'vm-linux-debug-simmips-stable',
-    'vm-linux-release-simmips-stable',
     'vm-linux-debug-simarm-stable',
     'vm-linux-release-simarm-stable',
     'vm-linux-release-simarm64-stable',
   ],
   'dart2js-d8-hostchecked-stable': const <String>[
     'dart2js-linux-d8-hostchecked-1-5-stable',
     'dart2js-linux-d8-hostchecked-2-5-stable',
     'dart2js-linux-d8-hostchecked-3-5-stable',
     'dart2js-linux-d8-hostchecked-4-5-stable',
     'dart2js-linux-d8-hostchecked-5-5-stable',
@@ skipping 79 matching lines @@
     'dartium-linux-x64-inc-integration',
     'dartium-mac-x64-inc-integration',
     'dartium-win-ia32-inc-integration',
   ],
   'dartium-full-integration': const <String>[
     'dartium-linux-x64-integration',
     'dartium-mac-x64-integration',
     'dartium-win-ia32-integration',
   ],
 };