replace groovy code with ability in card script

release/Magarena/scripts/Air_Servant.groovy

@@ -1,32 +0,0 @@
-[
-    new MagicPermanentActivation(
-        new MagicActivationHints(MagicTiming.Tapping),
-        "Tap"
-    ) {
-
-        @Override
-        public Iterable<MagicEvent> getCostEvent(final MagicPermanent source) {
-            return [new MagicPayManaCostEvent(source,"{2}{U}")];
-        }
-
-        @Override
-        public MagicEvent getPermanentEvent(final MagicPermanent source,final MagicPayedCost payedCost) {
-            return new MagicEvent(
-                source,
-                MagicTargetChoice.NEG_TARGET_CREATURE_WITH_FLYING,
-                MagicTapTargetPicker.Tap,
-                this,
-                "Tap target creature\$ with flying."
-            );
-        }
-
-        @Override
-        public void executeEvent(final MagicGame game, final MagicEvent event) {
-            event.processTargetPermanent(game,new MagicPermanentAction() {
-                public void doAction(final MagicPermanent creature) {
-                    game.doAction(new MagicTapAction(creature,true));
-                }
-            });
-        }
-    }
-]

release/Magarena/scripts/Air_Servant.txt

@@ -7,6 +7,6 @@ type=Creature
 subtype=Elemental
 cost={4}{U}
 pt=4/3
-ability=flying
+ability=flying;\
+        pay {2}{U} Tap target creature with flying.
 timing=main
-requires_groovy_code