Delete all references to GIT_MODE=True from build

scripts/slave/recipe_modules/syzygy/example.py

 # 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.
 
 """Example of using the Syzygy recipe module."""
 
 # Recipe module dependencies.
 DEPS = [
   'chromium',
   'depot_tools/gclient',
   'recipe_engine/platform',
   'recipe_engine/properties',
   'syzygy',
 ]
 
 
 from recipe_engine.recipe_api import Property
 
 PROPERTIES = {
   'buildername': Property(),
 }
 
 
 def RunSteps(api, buildername):
   # Configure the build environment.
   if buildername == 'Syzygy Debug':
     api.syzygy.set_config('syzygy', BUILD_CONFIG='Debug')
     api.chromium.set_config('syzygy', BUILD_CONFIG='Debug')
-    api.gclient.set_config('syzygy', BUILD_CONFIG='Debug', GIT_MODE=True)
+    api.gclient.set_config('syzygy', BUILD_CONFIG='Debug')
   elif buildername == 'Syzygy Coverage':
     api.syzygy.set_config('syzygy', BUILD_CONFIG='Coverage')
     api.chromium.set_config('syzygy', BUILD_CONFIG='Coverage')
-    api.gclient.set_config('syzygy', BUILD_CONFIG='Coverage', GIT_MODE=True)
+    api.gclient.set_config('syzygy', BUILD_CONFIG='Coverage')
   else:
     assert buildername == 'Syzygy Official'
     api.syzygy.set_config('syzygy_official')
     api.chromium.set_config('syzygy_official')
-    api.gclient.set_config('syzygy_official', GIT_MODE=True)
+    api.gclient.set_config('syzygy_official')
 
   # Clean up any running processes on the slave.
   api.syzygy.taskkill()
 
   # Checkout and compile the project.
   api.syzygy.checkout()
   api.syzygy.runhooks()
   api.syzygy.compile()
 
   # Run every possible test. Most builders also run a subset of these.
@@ skipping 20 matching lines @@
 
 
 def GenTests(api):
   """Generates an end-to-end successful test for this builder."""
   yield api.syzygy.generate_test(api, 'Syzygy Debug')
 
   # Use 'fake_slave' as a slave name to ensure that we get coverage of the
   # alternate code paths in Coverage and Official specific commands builds.
   yield api.syzygy.generate_test(api, 'Syzygy Coverage', slavename='fake_slave')
   yield api.syzygy.generate_test(api, 'Syzygy Official', slavename='fake_slave')