Remove GeoTableDefinitions, GeoConnectionAdapters
Remove GeoTableDefinitions, GeoConnectionAdapters

This code is problematic as it alters method_missing for base
ActiveRecord Table and TableDefinition classes.

Instead, create specific methods for types in the specific adapter’s
Table and TableDefinition classes.

See
https://github.com/rgeo/activerecord-postgis-adapter/commit/86e52378c2
for an example

dzjuck/rgeo-activerecord,januszm/rgeo-activerecord