Revert "Optimize user attempts fetching. (#491)"

This reverts commit b8ef12c.

axes/handlers/database.py

@@ -31,12 +31,6 @@ class AxesDatabaseHandler(AxesHandler):  # pylint: disable=too-many-locals
     Signal handler implementation that records user login attempts to database and locks users out if necessary.
     """
 
-    def _get_user_attempts(self, request, credentials: dict = None):
-        if not hasattr(request, "axes_user_attempts"):
-            request.axes_user_attempts = get_user_attempts(request, credentials)
-
-        return request.axes_user_attempts
-
     def reset_attempts(self, *, ip_address: str = None, username: str = None) -> int:
         attempts = AccessAttempt.objects.all()
 
@@ -66,7 +60,7 @@ def reset_logs(self, *, age_days: int = None) -> int:
         return count
 
     def get_failures(self, request, credentials: dict = None) -> int:
-        attempts = self._get_user_attempts(request, credentials)
+        attempts = get_user_attempts(request, credentials)
         return (
             attempts.aggregate(Max("failures_since_start"))["failures_since_start__max"]
             or 0
@@ -129,7 +123,7 @@ def user_login_failed(
 
             separator = "\n---------\n"
 
-            attempts = self._get_user_attempts(request, credentials)
+            attempts = get_user_attempts(request, credentials)
             attempts.update(
                 get_data=Concat("get_data", Value(separator + get_data)),
                 post_data=Concat("post_data", Value(separator + post_data)),