Move warnings flag to relevant target
Move warnings flag to relevant target

Source files were recently split out into their own target, but the a
flag to suppress a superfluous warning in them stayed behind. This just
moves it to the appropriate target.

PiperOrigin-RevId: 257519707
Change-Id: If0b32e2d6a292c424caee96a38f34e11a346b2f3

google/asylo,google/asylo,google/asylo,google/asylo,google/asylo,google/asylo