qcacld-3.0: Remove gEnableMemoryDebug remnants

Previously change I374e870610d79cc0d172ae126bfa70dc6d2db9a9
("qcacld-3.0: Remove not used INI CFG") removed most of the code
associated with the obsolete configuration object gEnableMemoryDebug.
However it left behind the documentation as well as the CFG macros, so
remove those as well.

Change-Id: Ic4d302416630588020111307b73694710e5a269a
CRs-Fixed: 2367379

core/hdd/inc/wlan_hdd_cfg.h

@@ -1791,31 +1791,6 @@ enum hdd_link_speed_rpt_type {
 #define CFG_RA_RATE_LIMIT_INTERVAL_DEFAULT         (60) /*60 SEC */
 #endif
 
-/*
- * <ini>
- * gEnableMemoryDebug - Enables the memory debug
- * @Min: 0
- * @Max: 1
- * @Default: 1
- *
- * This ini is used to enable default memory debug
- *
- * Related: None
- *
- * Supported Feature: STA
- *
- * Usage: Internal/External
- *
- * </ini>
- */
-
-#ifdef MEMORY_DEBUG
-#define CFG_ENABLE_MEMORY_DEBUG_NAME             "gEnableMemoryDebug"
-#define CFG_ENABLE_MEMORY_DEBUG_MIN              (0)
-#define CFG_ENABLE_MEMORY_DEBUG_MAX              (1)
-#define CFG_ENABLE_MEMORY_DEBUG_DEFAULT          (1)
-#endif
-
 /*
  * <ini>
  * gInitialDwellTime - Used to set initial dwell time