qcacld-3.0: Remove macro OL_TXRX_INVALID_TDLS_PEER_ID

Previously change I983851d8cc0d3605c3d6bd0d8975c72844f71740
("qcacld-3.0: TDLS: remove remaining legacy code") removed the last
references to macro OL_TXRX_INVALID_TDLS_PEER_ID, but did not remove
the macro itself, so remove it now.

Change-Id: I8cceb66b8b52ae55cceb3400d2fdc2bb618b73cd
CRs-Fixed: 2362723

core/hdd/src/wlan_hdd_cfg80211.h

@@ -142,8 +142,6 @@ struct hdd_context;
 #define USE_CFG80211_DEL_STA_V2
 #endif
 
-#define OL_TXRX_INVALID_TDLS_PEER_ID 0xff
-
 /**
  * enum eDFS_CAC_STATUS: CAC status
  *