refactor: clean up unused imports and dead code across commands, services, and tests.

src/modules/economy/lootdrop.service.test.ts

@@ -1,7 +1,6 @@
 import { describe, it, expect, mock, beforeEach, afterEach, spyOn } from "bun:test";
 import { lootdropService } from "./lootdrop.service";
 import { lootdrops } from "@/db/schema";
-import { eq, and, isNull } from "drizzle-orm";
 import { economyService } from "./economy.service";
 
 // Mock dependencies BEFORE using service functionality