With bsaes-x86_64.pl gone, it is no longer needed. Depending on how armv7 works
(if vpaes-armv7.pl is too slow AND on-demand vpaes->bsaes key conversion is not
viable), we may need to bring it back, but get it out of the way for now.
Bug: 256
Change-Id: I762c83097bd03d88574ae1ae16b88fca6826f655
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/35365
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>