Removes thread block size and work per thread in helpers.hpp since they would...

Removes thread block size and work per thread in helpers.hpp since they would be double defined there

stan/math/gpu/kernels/helpers.hpp

@@ -23,9 +23,14 @@ std::string helpers =
   #ifndef C
   #define C(i,j) C[j * rows + i]
   #endif
+	// Transpose
   #ifndef BT
   #define BT(i,j) B[j * cols + i]
   #endif
+	#ifndef AT
+	#define AT(i,j) A[j * cols + i]
+	#endif
+	// Moving between two buffers
   #ifndef src
   #define src(i,j) src[j * src_rows + i]
   #endif
@@ -33,16 +38,9 @@ std::string helpers =
   #define dst(i,j) dst[j * dst_rows + i]
   #endif
 
-	// Thread block sizes
-  #ifndef WORK_PER_THREAD
-  #define WORK_PER_THREAD 8
-  #endif
-  #ifndef THREAD_BLOCK_SIZE
-  #define THREAD_BLOCK_SIZE 32
-  #endif
-  #ifndef THREAD_BLOCK_SIZE_COL
+	// The local memory column for each thread block
   #define THREAD_BLOCK_SIZE_COL THREAD_BLOCK_SIZE/WORK_PER_THREAD
-  #endif
+
   )";
 }  // namespace opencl_kernels
 }  // namespace math