Staging: vt6655: Remove CARDvSetLoopbackMode definition.

Remove function CARDvSetLoopbackMode that is never called, along with
comments related to it.

Signed-off-by: Briana Oursler <briana.oursler@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Link: https://lore.kernel.org/r/b81f06ebc0179fbceb43c085411b372ff909b134.1585802818.git.briana.oursler@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/card.c

@@ -11,7 +11,6 @@
  *      CARDvUpdateBasicTopRate - Update BasicTopRate
  *      CARDbAddBasicRate - Add to BasicRateSet
  *      CARDbIsOFDMinBasicRate - Check if any OFDM rate is in BasicRateSet
- *      CARDvSetLoopbackMode - Set Loopback mode
  *      CARDqGetTSFOffset - Calculate TSFOffset
  *      CARDbGetCurrentTSF - Read Current NIC TSF counter
  *      CARDqGetNextTBTT - Calculate Next Beacon TSF counter
@@ -814,34 +813,6 @@ unsigned char CARDbyGetPktType(struct vnt_private *priv)
 		return PK_TYPE_11GB;
 }
 
-/*
- * Description: Set NIC Loopback mode
- *
- * Parameters:
- *  In:
- *      priv         - The adapter to be set
- *      wLoopbackMode   - Loopback mode to be set
- *  Out:
- *      none
- *
- * Return Value: none
- */
-void CARDvSetLoopbackMode(struct vnt_private *priv,
-			  unsigned short wLoopbackMode)
-{
-	switch (wLoopbackMode) {
-	case CARD_LB_NONE:
-	case CARD_LB_MAC:
-	case CARD_LB_PHY:
-		break;
-	default:
-		break;
-	}
-	/* set MAC loopback */
-	MACvSetLoopbackMode(priv, LOBYTE(wLoopbackMode));
-	/* set Baseband loopback */
-}
-
 /*
  * Description: Calculate TSF offset of two TSF input
  *              Get TSF Offset from RxBCN's TSF and local TSF

drivers/staging/vt6655/card.h

@@ -44,8 +44,6 @@ struct vnt_private;
 void CARDvSetRSPINF(struct vnt_private *priv, u8 bb_type);
 void CARDvUpdateBasicTopRate(struct vnt_private *priv);
 bool CARDbIsOFDMinBasicRate(struct vnt_private *priv);
-void CARDvSetLoopbackMode(struct vnt_private *priv,
-			  unsigned short wLoopbackMode);
 void CARDvSetFirstNextTBTT(struct vnt_private *priv,
 			   unsigned short wBeaconInterval);
 void CARDvUpdateNextTBTT(struct vnt_private *priv, u64 qwTSF,