Removed unused mock method from tests/test_settings.py

tests/test_settings.py

@@ -1,11 +1,6 @@
 from src.settings import settings
 from src.settings_manager import settings_manager
 import unittest, os, random
-
-
-def read_file(filename):
-    with open(filename, 'r') as f:
-        return f.read()
     
 
 class test_settings(unittest.TestCase):