Delete all test isolate file.

sandbox/sandbox_linux_unittests.isolate

Index: sandbox/sandbox_linux_unittests.isolate
diff --git a/sandbox/sandbox_linux_unittests.isolate b/sandbox/sandbox_linux_unittests.isolate
deleted file mode 100644
index 2b7c2a73af3772a86458b8cc54c75cb5069da729..0000000000000000000000000000000000000000
--- a/sandbox/sandbox_linux_unittests.isolate
+++ /dev/null
@@ -1,23 +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.
-
-# Because of a limitation in isolate_driver.py, this file needs to be in
-# the same directory as the main .gyp file.
-
-{
-  'conditions': [
-    ['OS=="android" or OS=="linux"', {
-      'variables': {
-        'command': [
-          '<(PRODUCT_DIR)/sandbox_linux_unittests',
-        ],
-      },
-    }],
-  ],
-  'includes': [
-    # This is needed because of base/ dependencies on
-    # icudtl.dat.
-    '../base/base.isolate',
-  ],
-}