First of all, this is a really bad idea: warnings exist for a reason , you really need to check each of them.
But ... you want to suppress every warning or just a few types there, check out these simple steps and disable all or just what you need:
1) find "show warning" in the build settings

2) in the build settings, search for Apple LLVM 7.0 - Warnings - All languages

Massimo Polimeni Oct. 14 '15 at 17:14 2015-10-14 17:14
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