Removed 'vgrid_imagesettings' that slipped through

Author: Martin-Rehr

mig/install/MiGserver-template.conf

@@ -160,7 +160,6 @@ vgrid_resources = resources
 vgrid_triggers = triggers
 vgrid_settings = settings
 vgrid_sharelinks = sharelinks
-vgrid_imagesettings = imagesettings
 vgrid_monitor = monitor
 
 # Optional shared ssh public key presented to resource owners