net: ethernet: mtk_eth_soc: remove unused variable 'count'

GCC reports the following warning with W=1:

drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c:80:9: warning:
 variable 'count' set but not used [-Wunused-but-set-variable]
   80 |  int i, count;
      |         ^~~~~

This variable is not used in function , this commit
remove it to fix the warning.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qiheng Lin <linqiheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mediatek/mtk_ppe_debugfs.c

@@ -77,9 +77,9 @@ static int
 mtk_ppe_debugfs_foe_show(struct seq_file *m, void *private, bool bind)
 {
 	struct mtk_ppe *ppe = m->private;
-	int i, count;
+	int i;
 
-	for (i = 0, count = 0; i < MTK_PPE_ENTRIES; i++) {
+	for (i = 0; i < MTK_PPE_ENTRIES; i++) {
 		struct mtk_foe_entry *entry = &ppe->foe_table[i];
 		struct mtk_foe_mac_info *l2;
 		struct mtk_flow_addr_info ai = {};