libmix: remove the work around for format change in video editor

BZ: 196532

This work around leads to one 1080i video clip no thumbnail displayed.
Remove it.

Change-Id: I26307bb31abfc5985d9feddeab046f5e8939f5c3
Signed-off-by: Tianmi Chen <tianmi.chen@intel.com>
Signed-off-by: Gu, Wangyi <wangyi.gu@intel.com>
diff --git a/videodecoder/VideoDecoderAVC.cpp b/videodecoder/VideoDecoderAVC.cpp
index 13dd5db..296a0ca 100644
--- a/videodecoder/VideoDecoderAVC.cpp
+++ b/videodecoder/VideoDecoderAVC.cpp
@@ -760,18 +760,6 @@
         data->codec_data->crop_right,
         data->codec_data->crop_bottom);
 
-    if (!(mConfigBuffer.flag & USE_NATIVE_GRAPHIC_BUFFER)){
-        // BUG 159760: the port definition's height were set according to the infomation in container.
-        // In some cases, this info is not right. Need to correct it by format change notification.
-        uint32_t cropWidth = mVideoFormatInfo.width - (mVideoFormatInfo.cropLeft + mVideoFormatInfo.cropRight);
-        uint32_t cropHeight = mVideoFormatInfo.height - (mVideoFormatInfo.cropBottom + mVideoFormatInfo.cropTop);
-
-        if (width != cropWidth || height != cropHeight) {
-            mSizeChanged = true;
-            ITRACE("Raw data mode: video size is changed.");
-        }
-    }
-
     if (mConfigBuffer.flag & WANT_SURFACE_PROTECTION) {
         mVideoFormatInfo.actualBufferNeeded = mConfigBuffer.surfaceNumber;
     } else {