qcacmn: Remove head file which is not required from c file

wlan_hdd_object_manager.h head file was added by mistake, remove it
from wlan_cfg80211_afc.c.

Change-Id: I4747a494d4a35e9b2915676e50e1e4e8559d7486
CRs-Fixed: 3640409

os_if/linux/afc/src/wlan_cfg80211_afc.c

@@ -25,7 +25,6 @@
 #include <wlan_reg_ucfg_api.h>
 #include <wlan_objmgr_pdev_obj.h>
 #include <wlan_osif_priv.h>
-#include <wlan_hdd_object_manager.h>
 #include <wlan_afc_ucfg_api.h>
 
 /* Maximum AFC data length can pass to target limited by platform driver */