Disable all warnings in zlib. Every compiler (and version of compiler) seems to have a slightly different set of things to warn-on-error about. All we do is play Whack-A-Mole all the time, and we can't actually change the zlib code. Thus, this just disables all warnings, removing the disabling of specific warnings. [email protected] Bug: openscreen:95 Change-Id: Ieb5f3b3a4f73dead315dd5e571e31974c69d4787