Delete all test isolate file.

ipc/ipc_tests.isolate

Index: ipc/ipc_tests.isolate
diff --git a/ipc/ipc_tests.isolate b/ipc/ipc_tests.isolate
deleted file mode 100644
index 5a8c93a4b8fe011fe4e8f9884e7b28b6c7ec916e..0000000000000000000000000000000000000000
--- a/ipc/ipc_tests.isolate
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 2015 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.
-{
-  'conditions': [
-    ['OS=="linux" or OS=="mac" or OS=="win"', {
-      'variables': {
-        'command': [
-          '../testing/test_env.py',
-          '<(PRODUCT_DIR)/ipc_tests<(EXECUTABLE_SUFFIX)',
-          '--brave-new-test-launcher',
-          '--test-launcher-bot-mode',
-          '--asan=<(asan)',
-          '--msan=<(msan)',
-          '--tsan=<(tsan)',
-        ],
-        'files': [
-          '../testing/test_env.py',
-        ],
-      },
-    }],
-  ],
-  'includes': [
-    '../base/base.isolate',
-  ],
-}