Simplify SkTArray move()

Switch from using template enable_if to use 'if constexpr' making
the code clearer.

Change-Id: Ifa97cf99c38d4a195dcb439f0aadf8a3e2eedf13
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/592738
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
1 file changed