Delete yasm config files

These aren't currently being used.

Our clients typically compile libjpeg-turbo themselves and use their
own yasm to build the .asm files.

For the libjpeg-turbo that we use to test, we don't compile the
.asm optimizations.  Maybe we should do this...  But while we don't
there is no need for the yasm config files.

BUG=skia:

Change-Id: I903a47ce444b6740b32fe8d99472c4d959058f7b
Reviewed-on: https://skia-review.googlesource.com/9238
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
11 files changed