Remove the legacy ItemTemplate and static_item_templates loader

Every reader moved to CObjectTemplate in 1.7, so the DB-loaded
engine.objects.ItemTemplate, LOAD_ITEM_TEMPLATES and linkCacheTemplates
are dead. No value changes: nothing read the legacy maps any more.
The boot log loses the legacy per-type count and the link warnings.

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

src/engine/parsers/objects/ItemTemplate.java

@@ -25,9 +25,7 @@ import java.util.LinkedHashMap;
 // Values are kept as the client defines them: no req/res splitting,
 // no defaults substituted. Strings with a matching enum in mbEnums
 // are stored as that enum; everything else stays a String.
-//
-// Not to be confused with engine.objects.ItemTemplate, which is loaded
-// from the database. Read only once loaded.
+// Read only once loaded.
 
 public class ItemTemplate implements CObjectTemplate {
 
@@ -487,7 +485,7 @@ public class ItemTemplate implements CObjectTemplate {
         public int weapon_combat_idle_anim;
         public final ArrayList<Damage> weapon_damage = new ArrayList<>();
 
-        // [animation, duration] pairs in file order; names from engine.objects.ItemTemplate, not the client.
+        // [animation, duration] pairs in file order; names from the old static_item_templates export, not the client.
         public final ArrayList<int[]> weapon_attack_anim_right = new ArrayList<>();
         public final ArrayList<int[]> weapon_attack_anim_left = new ArrayList<>();
     }

src/engine/parsers/objects/RuneTemplate.java

@@ -141,7 +141,7 @@ public class RuneTemplate implements CObjectTemplate {
     public String rune_dsc;
     public String rune_fx_txt;
 
-    // Bit vectors. The existing ItemTemplate decodes these as MobBehaviourType.
+    // Bit vectors. The old static_item_templates export decoded these as MobBehaviourType.
 
     public long rune_group_tactics;
     public long rune_group_role_set;