refactor logger configuration and clean up test imports

src/utils/logger.ts

@@ -9,14 +9,6 @@ const logLevels = {
     debug: 4,
 };
 
-const logColors = {
-    error: "red",
-    warn: "yellow",
-    info: "green",
-    http: "magenta",
-    debug: "blue",
-};
-
 const logFormat = winston.format.combine(
     winston.format.timestamp({ format: "YYYY-MM-DD HH:mm:ss" }),
     winston.format.errors({ stack: true }),

tests/utils/verifyClient.test.ts

@@ -1,4 +1,4 @@
-import { describe, it, expect, vi, beforeEach, afterEach, Mocked } from "vitest";
+import { describe, it, expect, vi, beforeEach, Mocked } from "vitest";
 
 import type { IncomingMessage } from "node:http";
 import { verifyClient } from "../../src/utils/verifyClient";