Remove android platform rebaselines for tests not in SmokeTests

We run only SmokeTests on android build bot.
Many android platform rebaselines are not covered by the build bot and
have not been updated for a long time. Most of them have been out-dated,
especially after we changed repaint test result format and did many
rendering code changes.

Remove android platform rebaselines for tests not in SmokeTests to
- reduce number of files to checkout
- avoid confusion during rebaselining about out-dated android rebaselines

CL generated by the following python script:

smoke_tests = [re.sub('\.[a-z]*$', '', t.strip()) for t in open('SmokeTests').readlines()]
files = subprocess.Popen(['find', 'platform/android', '-name', '*-expected.*'], stdout=subprocess.PIPE).stdout.readlines()
for f in files:
  f = f.strip()
  test_name = re.sub(r'-expected\.[a-z]*$', '', re.sub(r'^platform/android/', '', f))
  if not test_name in smoke_tests:
    os.remove(f)

R=dpranke@chromium.org

Review URL: https://codereview.chromium.org/448353002

git-svn-id: svn://svn.chromium.org/blink/trunk@179769 bbb929c8-8fbe-4397-9dbb-9b2b20218538