tests: skip redundant -Wstrict-prototypes setup
tests: skip redundant -Wstrict-prototypes setup

We inherit the top-level Rules.mak which sets up this flag for us,
so just rely on that.

Signed-off-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@gentoo.org>

kraj/uclibc-ng,ndmsystems/uClibc,mephi42/uClibc,kraj/uClibc,atgreen/uClibc-moxie,czankel/xtensa-uclibc,groundwater/uClibc,hjl-tools/uClibc,groundwater/uClibc,groundwater/uClibc,hwoarang/uClibc,kraj/uclibc-ng,ddcc/klee-uclibc-0.9.33.2,kraj/uclibc-ng,hwoarang/uClibc,ffainelli/uClibc,mephi42/uClibc,groundwater/uClibc,majek/uclibc-vx32,hjl-tools/uClibc,waweber/uclibc-clang,hwoarang/uClibc,czankel/xtensa-uclibc,ddcc/klee-uclibc-0.9.33.2,czankel/xtensa-uclibc,waweber/uclibc-clang,foss-xtensa/uClibc,wbx-github/uclibc-ng,brgl/uclibc-ng,hwoarang/uClibc,ddcc/klee-uclibc-0.9.33.2,ffainelli/uClibc,brgl/uclibc-ng,ddcc/klee-uclibc-0.9.33.2,kraj/uClibc,atgreen/uClibc-moxie,groundwater/uClibc,foss-xtensa/uClibc,skristiansson/uClibc-or1k,foss-for-synopsys-dwc-arc-processors/uClibc,wbx-github/uclibc-ng,skristiansson/uClibc-or1k,majek/uclibc-vx32,ndmsystems/uClibc,ffainelli/uClibc,majek/uclibc-vx32,waweber/uclibc-clang,wbx-github/uclibc-ng,ndmsystems/uClibc,atgreen/uClibc-moxie,kraj/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,hjl-tools/uClibc,foss-xtensa/uClibc,ndmsystems/uClibc,wbx-github/uclibc-ng,foss-xtensa/uClibc,mephi42/uClibc,skristiansson/uClibc-or1k,hjl-tools/uClibc,brgl/uclibc-ng,hjl-tools/uClibc,mephi42/uClibc,brgl/uclibc-ng,ffainelli/uClibc,majek/uclibc-vx32,ffainelli/uClibc,atgreen/uClibc-moxie,foss-for-synopsys-dwc-arc-processors/uClibc,czankel/xtensa-uclibc,waweber/uclibc-clang,kraj/uclibc-ng,kraj/uClibc,skristiansson/uClibc-or1k