opencl: remove cl_kernels structure definition and mention.

No longer used.

TODO: check if clState would benefit from having kernel name.

miner.h

@@ -378,15 +378,6 @@ enum dev_enable {
 	DEV_RECOVER,
 };
 
-enum cl_kernels {
-	KL_NONE,
-	KL_ALEXKARNEW,
-	KL_ALEXKAROLD,
-	KL_CKOLIVAS,
-	KL_PSW,
-	KL_ZUIKKIS,
-};
-
 enum dev_reason {
 	REASON_THREAD_FAIL_INIT,
 	REASON_THREAD_ZERO_HASH,

ocl.h

@@ -30,7 +30,6 @@ typedef struct {
 	size_t max_work_size;
 	size_t wsize;
 	size_t compute_shaders;
-	enum cl_kernels chosen_kernel;
 } _clState;
 
 extern char *file_contents(const char *filename, int *length);