media: opera1: remove unused struct 'rc_map_opera_table'

'rc_map_opera_table' has been unused since
commit 2f4f58d6 ("[media] rc: Name RC keymap tables as
rc_map_table").

Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/usb/dvb-usb/opera1.c

@@ -32,10 +32,6 @@
 struct opera1_state {
 	u32 last_key_pressed;
 };
-struct rc_map_opera_table {
-	u32 keycode;
-	u32 event;
-};
 
 static int dvb_usb_opera1_debug;
 module_param_named(debug, dvb_usb_opera1_debug, int, 0644);