fix(hunting-buddy): remove 30s force-kill, defer to combat-trainer cleanup (elanthia-online#7358)

## Summary
- Removes the 30s force-kill timer that would
`stop_script('combat-trainer')` mid-combat, bypassing weapon stow and
leaving loaded weapons in hand
- Now that combat-trainer has its own 120s kill phase timeout (elanthia-online#7357),
this force-kill is redundant and harmful
- Reverts to a simple `pause 1 while` wait loop, letting combat-trainer
finish its own cleanup

## Test plan
- [ ] Hunt with a ranged weapon until skills reach threshold -- verify
combat-trainer cleans up on its own (no force-kill warning)
- [ ] Hunt with a melee weapon -- verify normal cleanup still works
- [ ] Kill hunting-buddy mid-hunt -- `before_dying` block still
force-stops combat-trainer (unchanged, separate concern)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: MahtraDR

hunting-buddy.lic

@@ -655,15 +655,7 @@ class HuntingBuddy
     notify_hook(:after_hunt, self, hunting_room: hunting_room, counter: counter)
 
     $COMBAT_TRAINER.stop
-    ct_stop_timer = Time.now
-    while Script.running?('combat-trainer') && $COMBAT_TRAINER.running
-      if Time.now - ct_stop_timer > 30
-        DRC.message("***WARNING*** combat-trainer did not stop gracefully after 30s, force-killing")
-        stop_script('combat-trainer') if Script.running?('combat-trainer')
-        break
-      end
-      pause 1
-    end
+    pause 1 while $COMBAT_TRAINER.running || Script.running?('combat-trainer')
     DRC.retreat
   end