Revert "Silence warnings in external/mesa3d"

This reverts commit 00d614268d72a8d3ba534ff9b88bdc974e0bfc15.

Reason for revert: caused -Wformat errors on one build
Fixes: 144536300

Change-Id: I82cdac9c00e53860e21ba3ccf9e0add586c1c554
1 file changed