Remove the NECROPET power target type

No power uses it after DRU-066 moved to the Powers.cfg Pet type, and its
area query (WorldGrid.getObjectsInRangePartialNecroPets) was an empty
stub. The DB rows are aligned with sql/necro-pet-targeting.sql.

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

src/engine/gameManager/PowersManager.java

@@ -1609,9 +1609,6 @@ public enum PowersManager {
                 //Pet only
                 allTargets = WorldGrid.getObjectsInRangePartial(
                         targetLoc, pb.getRadius(), MBServerStatics.MASK_PET);
-            else if (pb.targetNecroPet())
-                allTargets = WorldGrid.getObjectsInRangePartialNecroPets(
-                        targetLoc, pb.getRadius());
             else
                 allTargets = WorldGrid.getObjectsInRangePartial(
                         targetLoc, pb.getRadius(), 0);
@@ -1808,9 +1805,6 @@ public enum PowersManager {
                 //Pet only
                 allTargets = WorldGrid.getObjectsInRangePartial(
                         targetLoc, pb.getRadius(), MBServerStatics.MASK_PET);
-            else if (pb.targetNecroPet())
-                allTargets = WorldGrid.getObjectsInRangePartialNecroPets(
-                        targetLoc, pb.getRadius());
             else
                 allTargets = WorldGrid.getObjectsInRangePartial(
                         targetLoc, pb.getRadius(), 0);