[rdkb][common][app][Refactor wifi_delApAclDevices for deny acl file]

[Description]
Refactor wifi_delApAclDevices for deny acl file.

[Release-log]
N/A

Change-Id: I50754be52d7e6c51e852f6ffae72a8a7777b4bf3
diff --git a/src/wifi/wifi_hal.c b/src/wifi/wifi_hal.c
index 384ad20..2a3310a 100644
--- a/src/wifi/wifi_hal.c
+++ b/src/wifi/wifi_hal.c
@@ -9976,11 +9976,11 @@
     if(_syscmd(cmd,buf,sizeof(buf)))
         return RETURN_ERR;
 #endif
-    char cmd[MAX_CMD_SIZE]={0};
-    char buf[MAX_BUF_SIZE]={0};
+    char cmd[256]={0};
+    char buf[64]={0};
 
     WIFI_ENTRY_EXIT_DEBUG("Inside %s:%d\n",__func__, __LINE__);
-    sprintf(cmd, "rm %s%d 2>&1 && touch %s%d", ACL_PREFIX, apIndex, ACL_PREFIX, apIndex);
+    sprintf(cmd, "rm %s%d %s%d 2>&1 && touch %s%d %s%d", ACL_PREFIX, apIndex, DENY_PREFIX, apIndex, ACL_PREFIX, apIndex, DENY_PREFIX, apIndex);
     if(_syscmd(cmd, buf, sizeof(buf)))
         return RETURN_ERR;
     WIFI_ENTRY_EXIT_DEBUG("Exiting %s:%d\n",__func__, __LINE__);