Delete all of the video_processing module but the denoiser code.

webrtc/modules/video_processing/test/writeYUV420file.m

Index: webrtc/modules/video_processing/test/writeYUV420file.m
diff --git a/webrtc/modules/video_processing/test/writeYUV420file.m b/webrtc/modules/video_processing/test/writeYUV420file.m
deleted file mode 100644
index 359445009bd93620692ff285903271fa352f8db2..0000000000000000000000000000000000000000
--- a/webrtc/modules/video_processing/test/writeYUV420file.m
+++ /dev/null
@@ -1,22 +0,0 @@
-function writeYUV420file(filename, Y, U, V)
-% writeYUV420file(filename, Y, U, V)
-
-fid = fopen(filename,'wb');
-if fid==-1
-    error(['Cannot open file ' filename]);
-end
-
-numFrames=size(Y,3);
-
-for k=1:numFrames
-   % Write luminance
-   fwrite(fid,uint8(Y(:,:,k).'), 'uchar');
-
-   % Write U channel
-   fwrite(fid,uint8(U(:,:,k).'), 'uchar');
-
-   % Write V channel
-   fwrite(fid,uint8(V(:,:,k).'), 'uchar');
-end
-
-fclose(fid);