Remove KNOWN_FAILUREs from testing/backend/generic/scalar/select.cu
Remove KNOWN_FAILUREs from testing/backend/generic/scalar/select.cu

jaredhoberock/thrust,zeryx/thrust,mohamed-ali/thrust,arnabgho/thrust,egaburov/thrust,GrimDerp/thrust,zhenglaizhang/thrust,jaredhoberock/thrust,GrimDerp/thrust,xiongzhanblake/thrust,sdalton1/thrust,xiongzhanblake/thrust_src,sarvex/thrust,dachziegel/thrust,jaredhoberock/thrust,arnabgho/thrust,raygit/thrust,sdalton1/thrust,marksantos/thrust,mohamed-ali/thrust,jaredhoberock/thrust,raygit/thrust,andrewcorrigan/thrust-multi-permutation-iterator,sdalton1/thrust,GrimDerp/thrust,andrewcorrigan/thrust-multi-permutation-iterator,jaredhoberock/thrust,xiongzhanblake/thrust,thvasilo/thrust,thvasilo/thrust,thvasilo/thrust,thrust/thrust,xiongzhanblake/thrust_src,xiongzhanblake/thrust,Ricardo666666/thrust,sarvex/thrust,Ricardo666666/thrust,thrust/thrust,zeryx/thrust,dachziegel/thrust,Ricardo666666/thrust,mohamed-ali/thrust,dachziegel/thrust,raygit/thrust,thrust/thrust,thrust/thrust,egaburov/thrust,arnabgho/thrust,andrewcorrigan/thrust-multi-permutation-iterator,zhenglaizhang/thrust,thrust/thrust,marksantos/thrust,xiongzhanblake/thrust_src,egaburov/thrust,zhenglaizhang/thrust,sarvex/thrust,zeryx/thrust,marksantos/thrust