staging: rtl8192e: remove empty cases from switch statements

Rmove empty cases from switch statements to improve readability.
All of these empty cases are covered by a default case already.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20240222112723.18428-3-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/rtl_dm.c

@@ -1725,7 +1725,6 @@ static void _rtl92e_dm_check_fsync(struct net_device *dev)
 				_rtl92e_dm_start_hw_fsync(dev);
 				priv->rtllib->fsync_state = HW_Fsync;
 				break;
-			case HW_Fsync:
 			default:
 				break;
 			}
@@ -1740,7 +1739,6 @@ static void _rtl92e_dm_check_fsync(struct net_device *dev)
 				_rtl92e_dm_start_sw_fsync(dev);
 				priv->rtllib->fsync_state = SW_Fsync;
 				break;
-			case SW_Fsync:
 			default:
 				break;
 			}
@@ -1760,7 +1758,6 @@ static void _rtl92e_dm_check_fsync(struct net_device *dev)
 			_rtl92e_dm_end_sw_fsync(dev);
 			priv->rtllib->fsync_state = Default_Fsync;
 			break;
-		case Default_Fsync:
 		default:
 			break;
 		}