Remove the dead mobbase base-skill path

static_npc_mobbase_stats.baseSkills never matches a static_skill_skillsbase
token on dev (2007496699 on 2208 rows is no known skill hash and is absent
from the client), so applyMobbaseSkill never added a skill and only cost a
skillsbase query per mob spawn. No value changes. Nothing reads the
baseSkills/skillAmount columns now; the table goes in 3.6.

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

src/engine/objects/Mob.java

@@ -1290,7 +1290,6 @@ public class Mob extends AbstractIntelligenceAgent implements Delayed {
 
         NPCManager.applyMobbaseEffects(this);
         NPCManager.applyEquipmentResists(this);
-        NPCManager.applyMobbaseSkill(this);
         NPCManager.applyRuneSkills(this, this.getMobBaseID());
         this.recalculateStats();
         this.setHealth(this.healthMax);