its not "low upkeep" its "no upkeep" i think
You want to get rid of the following fields [I list their Raw data names]:That's it as far as I know.
- RESOURCES_COLUMN4
- RESOURCE_UBERTIP_UPKEEP
- COLON_UPKEEP
- RESOURCE_UBERTIP_UPKEEP_INFO_WOOD
- RESOURCE_UBERTIP_UPKEEP_INFO