Remove the DB effect loaders

Effects, modifiers, source types, effect fail conditions and item
enchant values all come from Effects.cfg (4.6b). Removes
dbEffectsBaseHandler, dbPowerHandler, the EffectsBase and effect
modifier ResultSet constructors, EffectsBase.getFailConditions and
LOAD_ENCHANT_VALUES.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/engine/powers/effectmodifiers/PowerCostEffectModifier.java

@@ -13,15 +13,8 @@ import engine.jobs.AbstractEffectJob;
 import engine.objects.*;
 import engine.parsers.objects.wpak.EffectTemplate;
 
-import java.sql.ResultSet;
-import java.sql.SQLException;
-
 public class PowerCostEffectModifier extends AbstractEffectModifier {
 
-    public PowerCostEffectModifier(ResultSet rs) throws SQLException {
-        super(rs);
-    }
-
     public PowerCostEffectModifier(String IDString, EffectTemplate.ModEntry modEntry) {
         super(IDString, modEntry);
     }