qcacld-3.0: Remove typedef tSirSmeRoamOffloadSynchCnf

Change I4af569b1e3020a64beb606e8bbffd7613775138f ("qcacld-3.0:
Optimize LFR3 roam synch propagation") removed all logic which used
the tSirSmeRoamOffloadSynchCnf typedef. Since this typedef is now
obsolete, remove it.

Change-Id: I42a49d35d170cbd28b9dcbae3906affbc3f46b17
CRs-Fixed: 2396069

core/mac/inc/sir_api.h

@@ -3139,10 +3139,6 @@ struct roam_offload_synch_ind {
 };
 
 #ifdef WLAN_FEATURE_ROAM_OFFLOAD
-typedef struct sSirSmeRoamOffloadSynchCnf {
-	uint8_t sessionId;
-} tSirSmeRoamOffloadSynchCnf, *tpSirSmeRoamOffloadSynchCnf;
-
 typedef struct sSirSmeHOFailureInd {
 	uint8_t sessionId;
 } tSirSmeHOFailureInd, *tpSirSmeHOFailureInd;