Fix malformed migrations

db/migrate/20160905151345_convert_x_y_to_float_and_remove_schedule_id_from_regimen_item.rb

@@ -5,7 +5,5 @@ class ConvertXYToFloatAndRemoveScheduleIdFromRegimenItem < ActiveRecord::Migrati
      remove_column :plants, coord
      add_column :plants, coord, :float, default: 0
    end
-   # Remove schedule_id from regimen_item.
-   remove_column :plants, :schedule_id
   end
 end

db/migrate/20160916132424_convert_planted_at_to_datetime.rb

@@ -1,7 +1,7 @@
 class ConvertPlantedAtToDatetime < ActiveRecord::Migration
   def change
    # Make Plant planted_at a datetime
-     remove_column :plants, :planted_at, :string
+     remove_column :plants, :planted_at
      add_column :plants, :planted_at, :datetime
   end
 end