nptl: remove sigaction, sigprocmask, and sigfillset from libpthread
nptl: remove sigaction, sigprocmask, and sigfillset from libpthread

Having them defined in both places was causing errors with static linking

Signed-off-by: Austin Foxley <65462a1d10372f5df6b6641242ca623823c369f3@cetoncorp.com>
Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>

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