remove unwanted import

Author: MeKaustubh07

lib/node_modules/@stdlib/stats/base/ndarray/dmin/benchmark/c/benchmark.length.c

@@ -22,7 +22,6 @@
 #include "stdlib/ndarray/index_modes.h"
 #include "stdlib/ndarray/orders.h"
 #include "stdlib/ndarray/base/bytes_per_element.h"
-#include <cstdlib>
 #include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>