Remove temp files in audio_processing_unittest.cc.

These files are leaking, rapidly filling trybot disks.

BUG=4258
R=kjellander@webrtc.org
TBR=bjornv@webrtc.org
TEST=out/Debug/modules_unittests --gtest_filter=*AudioProcessingTest*Formats/0 && ls out

Review URL: https://webrtc-codereview.appspot.com/35979004

Cr-Commit-Position: refs/heads/master@{#8232}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8232 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed