Delete large unused yuv files from media/test/data.

These affect the fuzzer archive size and seem totally unused. For the
rest of the .yuv files we should switch to using vp9-lossless to reduce
the size by up to 90%.

This changes removes 15,367,680 bytes.

Change-Id: Ic38a4029803a5544f298713afe5387a1df95c911
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1591890
Reviewed-by: Abhishek Arya <inferno@chromium.org>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#656487}
10 files changed