This reverts the non-ARM portions of 97999919bbe85ab213d283e18e597e028f8685d1. x86_64 perlasm already makes .globl imply .hidden. (Confusingly, ARM does not.) Since we don't need it, revert those to minimize divergence with upstream. Change-Id: I2d205cfb1183e65d4f18a62bde187d206b1a96de Reviewed-on: https://boringssl-review.googlesource.com/3610 Reviewed-by: Adam Langley <agl@google.com>