Update update.lst to remove Allplay Binding (#1821)

Removed Allplay Binding due to limited usage and maintenance issues.

Signed-off-by: lsiepel <leosiepel@gmail.com>

Author: lsiepel

distributions/openhab/src/main/resources/bin/update.lst

@@ -175,6 +175,7 @@ ALERT;Teslascope Binding: The Teslascope binding was refactored in order to supp
 ALERT;Tibber Binding: All channels have been renamed and restructured into groups. All items will need to be relinked to the new channel IDs.
 
 [5.1.0]
+ALERT;Allplay Binding: Due to limited usage and increasing maintenance issues, this binding has been removed.
 ALERT;Automower Binding: Restructured to modular things with auto-discovery of datapoints. New things and channels will need to be linked, existing items need to be adjusted.
 ALERT;evcc Binding: Restructured to modular things with auto-discovery of datapoints. You must reconfigure settings, recreate Things, and adjust Items as previous configurations are incompatible.
 ALERT;Freebox Binding: The binding has been removed from the distribution. You should consider migrating to the FreeboxOS binding.