tests: fix warnings caused by unused variable/function in test_skipdata.c
tests: fix warnings caused by unused variable/function in test_skipdata.c

fvrmatteo/capstone,krytarowski/capstone,krytarowski/capstone,nplanel/capstone,NeilBryant/capstone,bigendiansmalls/capstone,pyq881120/capstone,xia0pin9/capstone,8l/capstone,bowlofstew/capstone,bigendiansmalls/capstone,krytarowski/capstone,techvoltage/capstone,8l/capstone,NeilBryant/capstone,angelabier1/capstone,bowlofstew/capstone,sigma-random/capstone,fvrmatteo/capstone,07151129/capstone,07151129/capstone,angelabier1/capstone,8l/capstone,pyq881120/capstone,bowlofstew/capstone,bigendiansmalls/capstone,fvrmatteo/capstone,pranith/capstone,pombredanne/capstone,nplanel/capstone,pranith/capstone,AmesianX/capstone,bughoho/capstone,zneak/capstone,nplanel/capstone,bSr43/capstone,angelabier1/capstone,zuloloxi/capstone,fvrmatteo/capstone,techvoltage/capstone,pombredanne/capstone,bSr43/capstone,07151129/capstone,pombredanne/capstone,capturePointer/capstone,dynm/capstone,zuloloxi/capstone,code4bones/capstone,pombredanne/capstone,pyq881120/capstone,bughoho/capstone,code4bones/capstone,capturePointer/capstone,pranith/capstone,sephiroth99/capstone,07151129/capstone,capturePointer/capstone,zneak/capstone,AmesianX/capstone,07151129/capstone,NeilBryant/capstone,pyq881120/capstone,pyq881120/capstone,sephiroth99/capstone,dynm/capstone,bowlofstew/capstone,nplanel/capstone,zuloloxi/capstone,xia0pin9/capstone,bughoho/capstone,AmesianX/capstone,bigendiansmalls/capstone,sigma-random/capstone,AmesianX/capstone,bughoho/capstone,dynm/capstone,pyq881120/capstone,krytarowski/capstone,sigma-random/capstone,sephiroth99/capstone,sephiroth99/capstone,techvoltage/capstone,angelabier1/capstone,NeilBryant/capstone,pombredanne/capstone,xia0pin9/capstone,sephiroth99/capstone,bowlofstew/capstone,krytarowski/capstone,krytarowski/capstone,capturePointer/capstone,sigma-random/capstone,sigma-random/capstone,zuloloxi/capstone,sephiroth99/capstone,pyq881120/capstone,bowlofstew/capstone,techvoltage/capstone,capturePointer/capstone,dynm/capstone,zneak/capstone,dynm/capstone,8l/capstone,angelabier1/capstone,zuloloxi/capstone,AmesianX/capstone,NeilBryant/capstone,bSr43/capstone,angelabier1/capstone,pranith/capstone,pranith/capstone,8l/capstone,angelabier1/capstone,krytarowski/capstone,techvoltage/capstone,pombredanne/capstone,code4bones/capstone,xia0pin9/capstone,dynm/capstone,techvoltage/capstone,AmesianX/capstone,zuloloxi/capstone,bSr43/capstone,zneak/capstone,bughoho/capstone,dynm/capstone,code4bones/capstone,bughoho/capstone,fvrmatteo/capstone,bSr43/capstone,8l/capstone,bSr43/capstone,pranith/capstone,pranith/capstone,NeilBryant/capstone,code4bones/capstone,bowlofstew/capstone,pombredanne/capstone,nplanel/capstone,bigendiansmalls/capstone,sigma-random/capstone,bughoho/capstone,bigendiansmalls/capstone,zneak/capstone,nplanel/capstone,07151129/capstone,code4bones/capstone,NeilBryant/capstone,techvoltage/capstone,capturePointer/capstone,07151129/capstone,bigendiansmalls/capstone,sigma-random/capstone,8l/capstone,xia0pin9/capstone,zneak/capstone,nplanel/capstone,AmesianX/capstone,xia0pin9/capstone,code4bones/capstone,fvrmatteo/capstone,xia0pin9/capstone,bSr43/capstone,capturePointer/capstone,sephiroth99/capstone,fvrmatteo/capstone,zuloloxi/capstone,zneak/capstone