remove unnecessary file writes from tests

Change-Id: Ic6da86d05ac29d13c727a1fbe1229e45a846cb14
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4905171
Auto-Submit: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Junji Watanabe <jwata@google.com>
Reviewed-by: Junji Watanabe <jwata@google.com>

tests/autoninja_test.py

@@ -63,8 +63,6 @@ class AutoninjaTest(trial_dir.TestCase):
     def test_autoninja_reclient(self):
         out_dir = os.path.join('out', 'dir')
         write(os.path.join(out_dir, 'args.gn'), 'use_remoteexec=true')
-        write('.gclient', '')
-        write('.gclient_entries', 'entries = {"buildtools": "..."}')
         write(os.path.join('buildtools', 'reclient_cfgs', 'reproxy.cfg'),
               'RBE_v=2')
         write(os.path.join('buildtools', 'reclient', 'version.txt'), '0.0')
@@ -86,8 +84,6 @@ class AutoninjaTest(trial_dir.TestCase):
         # The test will only pass if both imports work and
         # 'use_remoteexec=true' is seen.
         write(os.path.join('out', 'common_2.gni'), 'use_remoteexec=true')
-        write('.gclient', '')
-        write('.gclient_entries', 'entries = {"buildtools": "..."}')
         write(os.path.join('buildtools', 'reclient_cfgs', 'reproxy.cfg'),
               'RBE_v=2')
         write(os.path.join('buildtools', 'reclient', 'version.txt'), '0.0')