Remove non-functional abstraction

Author: abergeron

src/gpuarray_buffer_cuda.c

@@ -444,7 +444,6 @@ static const char CUDA_PREAMBLE[] =
     "#define GLOBAL_MEM /* empty */\n"
     "#define LOCAL_MEM __shared__\n"
     "#define LOCAL_MEM_ARG /* empty */\n"
-    "#define REQD_WG_SIZE(X,Y,Z) __launch_bounds__(X*Y, Z)\n"
     "#ifdef NAN\n"
     "#undef NAN\n"
     "#endif\n"

src/gpuarray_buffer_opencl.c

@@ -288,7 +288,6 @@ static const char CL_PREAMBLE[] =
   "#define GLOBAL_MEM __global\n"
   "#define LOCAL_MEM __local\n"
   "#define LOCAL_MEM_ARG __local\n"
-  "#define REQD_WG_SIZE(x, y, z) __attribute__((reqd_work_group_size(x, y, z)))\n"
   "#ifndef NULL\n"
   "  #define NULL ((void*)0)\n"
   "#endif\n"