updated method in test (previous cache remove user commit)

Author: Matars

tests/test_cache.py

@@ -95,4 +95,4 @@ def test_cache_timestamp_update(self):
         assert updated_timestamp > initial_timestamp
 
         # Remove test user cache
-        self.cache_manager._remove_user_cache(username)
+        self.cache_manager.clear_user(username)