patches: llvm-all: Remove arm64 patch

It has been merged into mainline: https://git.kernel.org/torvalds/c/fa63da2ab046b885a7f70291aafc4e8ce015429b

Fixes: https://travis-ci.com/ClangBuiltLinux/continuous-integration/jobs/208057819

[skip ci]

Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>

Author: nathanchance