Staging: rtl8192e: Remove variable macId

Remove variable macId as it is defined but never used.
Signed-off-by: Tree Davies <tdavies@darkphysics.net>
Link: https://lore.kernel.org/r/20231210193705.2131807-5-tdavies@darkphysics.netSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtllib.h

@@ -136,7 +136,6 @@ struct cb_desc {
 	u8 bAMSDU:1;
 	u8 bFromAggrQ:1;
 	u8 reserved6:6;
-	u8 macId;
 	u8 priority;
 
 	/* Tx firmware related element(20-27) */