Removed unnecessary memset before an immediate memcpy

Change-Id: I447057f861bb6b7977de48a598fd5bed7e75460b
diff --git a/libvideoeditor/lvpp/VideoEditorTools.cpp b/libvideoeditor/lvpp/VideoEditorTools.cpp
index a35fb46..2b9fd60 100755
--- a/libvideoeditor/lvpp/VideoEditorTools.cpp
+++ b/libvideoeditor/lvpp/VideoEditorTools.cpp
@@ -3857,7 +3857,6 @@
     switch(rotation) {
         case 90:
             M4VIFI_Rotate90RightYUV420toYUV420(M4OSA_NULL, planeIn, planeOut);
-            memset(pBuffer, 0, (width*height*1.5));
             memcpy(pBuffer, (void *)outPtr, (width*height*1.5));
             break;
 
@@ -3868,7 +3867,6 @@
 
         case 270:
             M4VIFI_Rotate90LeftYUV420toYUV420(M4OSA_NULL, planeIn, planeOut);
-            memset(pBuffer, 0, (width*height*1.5));
             memcpy(pBuffer, (void *)outPtr, (width*height*1.5));
             break;