video: fbdev: aty: Delete unused variable in radeon_monitor

Fix warning about variable that is asssigned a value but never used.
The variable was indeed never used so delete it.

Keep the call to radeon_probe_i2c_connector() as it may have
side-effects. It is unlikely but I could not verify that is was safe to
drop the call.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-fbdev@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20201128224114.1033617-5-sam@ravnborg.org

drivers/video/fbdev/aty/radeon_monitor.c

@@ -488,12 +488,10 @@ void radeon_probe_screens(struct radeonfb_info *rinfo,
 #if defined(DEBUG) && defined(CONFIG_FB_RADEON_I2C)
 		{
 			u8 *EDIDs[4] = { NULL, NULL, NULL, NULL };
-			int mon_types[4] = {MT_NONE, MT_NONE, MT_NONE, MT_NONE};
 			int i;
 
 			for (i = 0; i < 4; i++)
-				mon_types[i] = radeon_probe_i2c_connector(rinfo,
-									  i+1, &EDIDs[i]);
+				radeon_probe_i2c_connector(rinfo, i + 1, &EDIDs[i]);
 		}
 #endif /* DEBUG */
 		/*