examples/ptpclient: remove wrong comment

This patch deletes the comments which are wrong and unnecessary.

Fixes: ab129e9 ("examples/ptpclient: add minimal PTP client")
Cc: stable@dpdk.org

Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

examples/ptpclient/ptpclient.c

@@ -606,10 +606,6 @@ lcore_main(void)
 	unsigned nb_rx;
 	struct rte_mbuf *m;
 
-	/*
-	 * Check that the port is on the same NUMA node as the polling thread
-	 * for best performance.
-	 */
 	printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n",
 			rte_lcore_id());