Remove remoteCommands plugin config

Remove the remoteCommand specific config allowRemoteCommandExecution.
The plugin has been removed and with the move to master managing the
instances/slaves it makes no sense to deny remote commands.

CHANGELOG.md

@@ -134,6 +134,8 @@ Version 2.0.0
   disableImportsOfEverythingExceptElectricity from the master config.
 - Removed msBetweenCommands config option.  The RCON is instead limited to 5
   concurrent commands.
+- Removed allowRemoteCommandExecution config option.  Remote commands are
+  always allowed with the move to master managing slaves/instances.
 
 
 Version 1.2.4

config.json.dist

@@ -29,5 +29,4 @@
 		"public": true,
 		"lan": true
 	},
-	"allowRemoteCommandExecution": true
 }