Remove tests for codecs we no longer plan on supporting.

client/site_tests/audiovideo_FFMPEG/audiovideo_FFMPEG.py

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import glob, logging, os, re, shutil, stat, string, time, urllib
 
 from autotest_lib.client.bin import test
 from autotest_lib.client.common_lib import error, utils
 
 # See partner bug 891 for why these tests' performance is being ignored.
 _IGNORE_PERFORMANCE_TESTS=(
     'tulip_hp.mp4',
     'tulip_bp.mp4',
-    'tulip_mp.mp4',
-    'tulip_vc1.wmv',
-    'tulip_wmv8.wmv',
-    'tulip_wmv9.wmv')
+    'tulip_mp.mp4')
 
 class audiovideo_FFMPEG(test.test):
     version = 1
 
     def setup(self):
         """ copy test asset to bindir. """
         if not os.path.exists(self.srcdir):
             os.mkdir(self.srcdir)
         # sysroot = os.environ["SYSROOT"]
         # testdir = os.path.join(sysroot, "usr/local/autotest-chrome")
@@ skipping 83 matching lines @@
             namekey = file_name.lower().replace('.', '_')
             self.performance_results['timeperframe_' + namekey] = tpf
             self.performance_results['cpuusage_' + namekey] = cpu_usage
         else:
             raise error.TestFail("ffmpeg_tests failed to exit normally!")
 
         # TODO(jiesun/fbarchard): what else need to be checked?
 
         # remove file after test to save diskspace.
         os.remove(file_path);