staging: rtl8723bs: Remove unused function prototype ODM_SetAntenna()

Remove unused function prototype ODM_SetAntenna.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lore.kernel.org/r/20190725052645.2372-9-nishkadg.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/hal/odm.h

@@ -1365,10 +1365,6 @@ extern  u32 TxScalingTable_Jaguar[TXSCALE_TABLE_SIZE];
 #define SWAW_STEP_PEAK		0
 #define SWAW_STEP_DETERMINE	1
 
-/* Remove DIG by yuchen */
-
-void ODM_SetAntenna(PDM_ODM_T pDM_Odm, u8 Antenna);
-
 /* Remove BB power saving by Yuchen */
 
 #define dm_CheckTXPowerTracking ODM_TXPowerTrackingCheck