Remove all .gyp and .gypi files.

third_party/junit/junit.gyp

Index: third_party/junit/junit.gyp
diff --git a/third_party/junit/junit.gyp b/third_party/junit/junit.gyp
deleted file mode 100644
index c797e06a5eb4b4ad81f26a88a6d39640d49c3a5e..0000000000000000000000000000000000000000
--- a/third_party/junit/junit.gyp
+++ /dev/null
@@ -1,34 +0,0 @@
-# Copyright 2014 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.
-
-{
-  'targets': [
-    {
-      # GN: //third_party/junit:hamcrest
-      'target_name': 'hamcrest_jar',
-      'type': 'none',
-      'variables': {
-        'jar_path': 'src/lib/hamcrest-core-1.1.jar',
-      },
-      'includes': [
-        '../../build/host_prebuilt_jar.gypi',
-      ]
-    },
-    {
-      # GN: //third_party/junit:junit
-      'target_name': 'junit_jar',
-      'type': 'none',
-      'dependencies': [
-        'hamcrest_jar',
-      ],
-      'variables': {
-        'src_paths': [ 'src/src/main/java' ],
-      },
-      'includes': [
-        '../../build/host_jar.gypi',
-      ],
-    },
-  ],
-}
-