taging: rtl8723au: Remove empty function odm_Init_RSSIForDM23a

The function odm_Init_RSSIForDM23a is empty and therefore there is no use
of keeping it. Also, remove its prototype.

Signed-off-by: Bhumika Goyal <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/rtl8723au/hal/odm_HWConfig.c

···
 	}
 }
 
-void odm_Init_RSSIForDM23a(struct dm_odm_t *pDM_Odm)
-{
-}
-
 static void odm_Process_RSSIForDM(struct dm_odm_t *pDM_Odm,
 				  struct phy_info *pPhyInfo,
 				  struct odm_packet_info *pPktinfo)

drivers/staging/rtl8723au/include/odm_HWConfig.h

···
 };
 
 
-void odm_Init_RSSIForDM23a(struct dm_odm_t *pDM_Odm);
-
 void
 ODM_PhyStatusQuery23a(
 	struct dm_odm_t *pDM_Odm,