Revert "build: try to use GITHUB_TOKEN"

This reverts commit 2c5b6e1.

.github/verify_versions.py

@@ -1,7 +1,6 @@
-import os
 import sys
 import unittest
-from urllib.request import Request, urlopen
+from urllib.request import urlopen
 import json
 
 def verify_all_mod_versions():
@@ -53,13 +52,7 @@ def retrieve_tag_info(tag_name, repository_url):
     i = 1
     while True:
         url = '{}?page={}'.format(repository_url, i)
-        req = Request(url)
-
-        token = os.getenv('GITHUB_TOKEN')
-        print("Using token {}", token)
-        req.add_header('authorization', 'Bearer {}'.format(token))
-
-        response = urlopen(req).read()
+        response = urlopen(url)
         tags_data = json.loads(response.read())
 
         # If page is empty, it means the tag couldn't be found