a little SkJumper tidy up

I noticed these little bits while working on that old-Clang fix.

   - We can force-inline anytime we've got Clang,
     not just when JUMPER_IS_OFFLINE.

   - The _aarch64 and _vfp4 WRAP functions are dead code,
     as they're never compiled offline now.

Change-Id: I5850daded2ffcfe50ceeadc43f89fa8597df3387
Reviewed-on: https://skia-review.googlesource.com/84060
Commit-Queue: Mike Klein <mtklein@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2 files changed