android: clean up data dependency push logging.

Became very clear that this was too much noise at info level while
working on pushing data deps for the emulator.

Bug: 922145
Change-Id: I038c478feed4e0f3bb39d8f9e7dc3ea21a22fd2b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1861111
Commit-Queue: John Budorick <jbudorick@chromium.org>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Auto-Submit: John Budorick <jbudorick@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Reviewed-by: Yun Liu <yliuyliu@google.com>
Cr-Commit-Position: refs/heads/master@{#706023}

build/android/pylib/local/device/local_device_instrumentation_test_run.py

@@ -296,9 +296,9 @@ class LocalDeviceInstrumentationTestRun(
         host_device_tuples_substituted = [
             (h, local_device_test_run.SubstituteDeviceRoot(d, device_root))
             for h, d in host_device_tuples]
-        logging.info('instrumentation data deps:')
+        logging.info('Pushing data dependencies.')
         for h, d in host_device_tuples_substituted:
-          logging.info('%r -> %r', h, d)
+          logging.debug('  %r -> %r', h, d)
         dev.PushChangedFiles(host_device_tuples_substituted,
                              delete_device_stale=True)
         if not host_device_tuples_substituted: