Clean out 3.0 to 3.1 rscompat handling of transforming Irrigate and Mine
Clean out rscompat code for converting ruleset from version prior dedicated Cultivate and Plant activities. That was 3.0, and current master is supposed to convert from 3.1.
Clean out rscompat code for converting ruleset from version prior dedicated Cultivate and Plant activities. That was 3.0, and current master is supposed to convert from 3.1.