Remove last clang:false in the platform.

It's been two years since this hack, so presumably clang has been fixed
since then. (There was no upstream llvm bug included, so we can't check.)

Bug: N/A
Test: N/A

(cherry picked from commit f891f489da942890fd01c83b860b6448b77ce042)

Change-Id: I5d1632f2fff597f8fd2aba5e5ca9fda44ab972d3
1 file changed