Remove a debug message that was commited by mistake in the previous commit.

src/datawizard/interfaces/csr_interface.c

@@ -103,8 +103,6 @@ void starpu_register_csr_data(starpu_data_handle *handleptr, uint32_t home_node,
 		.elemsize = elemsize
 	};
 
-	fprintf(stderr, "ROWPTR: %p NZVAL %p\n", rowptr, nzval);
-
 	_starpu_register_data_handle(handleptr, home_node, &interface, &interface_csr_ops);
 }