ice: Remove unused function prototype

Commit 37bb8390 ("ice: Move common functions out of ice_main.c part
7/7") seems to have inadvertently introduced a function prototype for
ice_vsi_cfg_tc without a corresponding function implementation. Remove it.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ice/ice_lib.h

@@ -70,8 +70,6 @@ void ice_vsi_free_rx_rings(struct ice_vsi *vsi);
 
 void ice_vsi_free_tx_rings(struct ice_vsi *vsi);
 
-int ice_vsi_cfg_tc(struct ice_vsi *vsi, u8 ena_tc);
-
 int ice_vsi_manage_rss_lut(struct ice_vsi *vsi, bool ena);
 
 #endif /* !_ICE_LIB_H_ */