Delete unused code in webrtc_libyuv.cc.

webrtc/modules/video_capture/video_capture_impl.cc

Index: webrtc/modules/video_capture/video_capture_impl.cc
diff --git a/webrtc/modules/video_capture/video_capture_impl.cc b/webrtc/modules/video_capture/video_capture_impl.cc
index c3d5f370911fe6654b5fabf66c71bc7b44ca87db..e6b2d55f98692497229f905138113febc3ff50ae 100644
--- a/webrtc/modules/video_capture/video_capture_impl.cc
+++ b/webrtc/modules/video_capture/video_capture_impl.cc
@@ -272,8 +272,6 @@ int32_t VideoCaptureImpl::IncomingFrame(
           }
         }
 
-        // TODO(mikhal): Update correct aligned stride values.
-        //Calc16ByteAlignedStride(target_width, &stride_y, &stride_uv);
         // Setting absolute height (in case it was negative).
         // In Windows, the image starts bottom left, instead of top left.
         // Setting a negative source height, inverts the image (within LibYuv).