qcacld-3.0: Rename ENTER/EXIT macros (part 5)

In order to better align with the rest of the driver, rename the
following macros:
 * ENTER -> hdd_enter
 * ENTER_DEV -> hdd_enter_dev
 * EXIT -> hdd_exit

For part 5, remove the original macro definitions

Change-Id: Ic456c9ded0006989410bd7b2a318f4583c99f54b
CRs-Fixed: 2205851

core/hdd/inc/wlan_hdd_main.h

@@ -242,10 +242,6 @@
 #define hdd_enter_dev(dev) hdd_debug("enter(%s)", (dev)->name)
 #define hdd_exit() hdd_debug("exit")
 
-#define ENTER() hdd_enter()
-#define ENTER_DEV(dev) hdd_enter_dev(dev)
-#define EXIT() hdd_exit()
-
 #define WLAN_HDD_GET_PRIV_PTR(__dev__) \
 		(struct hdd_adapter *)(netdev_priv((__dev__)))