benchmarks/vkoverhead: Revert "exorcise -Werror and unbreak on armv7"
This reverts commit f95a776840b0d53d446a8f219ed6ed5a7b135029.
As discussed with jbeich, this fix may fix the build, but it doesn't
lead to a working port. Revert until a proper fix can be designed.
MFH: 2025Q4
(cherry picked from commit e9ced2f2b9818c6366d2a7598cca4d8963115be9)