MAINTAINERS: Remove tree entry for rtl8180

This entry is not needed. Remove it.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Link: https://lore.kernel.org/r/20230804222438.16076-3-Larry.Finger@lwfinger.netSigned-off-by: Johannes Berg <johannes.berg@intel.com>

MAINTAINERS

@@ -18494,7 +18494,6 @@ RTL8180 WIRELESS DRIVER
 L:	linux-wireless@vger.kernel.org
 S:	Orphan
 W:	https://wireless.wiki.kernel.org/
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
 F:	drivers/net/wireless/realtek/rtl818x/rtl8180/
 
 RTL8187 WIRELESS DRIVER