qcacld-3.0: Remove unused htt_fw_stats macro ROUND_UP_TO_4

Macro ROUND_UP_TO_4 in htt_fw_stats.c is unused, so remove it.

Change-Id: I2aea830bee4d9e40546a02ee8715995e662cbeb2
CRs-Fixed: 2366962

core/dp/htt/htt_fw_stats.c

@@ -34,9 +34,6 @@
 
 #include <wlan_defs.h>
 
-#define ROUND_UP_TO_4(val) (((val) + 3) & ~0x3)
-
-
 static char *bw_str_arr[] = {"20MHz", "40MHz", "80MHz", "160MHz"};
 
 /*