pylint: Enable useless-suppression

https://pylint.pycqa.org/en/latest/user_guide/message-control.html#detecting-useless-disables:

> As pylint gets better and false positives are removed, disables that
  became useless can accumulate and clutter the code. In order to clean
  them you can enable the useless-suppression warning.

This doesn't enforce useless-suppression warnings as errors. The idea is
cleanup of these warings on every Pylint's bump.

Fixes: https://pagure.io/freeipa/issue/9117
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

pylintrc

@@ -28,10 +28,18 @@ valid-metaclass-classmethod-first-arg=cls
 
 enable=
     all,
-    python3
+    python3,
+    useless-suppression,
 
 disable=
-    I,
+    bad-inline-option,
+    c-extension-no-member,
+    deprecated-pragma,
+    file-ignored,
+    locally-disabled,
+    raw-checker-failed,
+    suppressed-message,
+    use-symbolic-message-instead,
     duplicate-code,
     interface-not-implemented,
     no-self-use,