Undo arm64 workaround.

Now we have new llvm to compile art for arm64 without -fno-vectorize.
BUG: 21080674

Change-Id: Id1b3a88ab9d4cf78b7f0dfd8cb435ed6e7ab7cb2
(cherry picked from commit b6cee946d44dc1e961c9656830b567e38104f896)
1 file changed