Revert "Turn on -Wformat-nonliteral."

One of my build aliases doesn't play nice with USE_MINGW=1, so my build lied to me. Will revert until I fix it up.

This reverts commit 459df8f3a14d4c614f0211049800cf7cad6d30ad.

Change-Id: I7905c5ae5ee85fb2d228ce63d81c79f140998c18
2 files changed