Ignore useless pylint options (fixes #5950)

def- · def- · commit 1020b0a26f0a · 2022-10-21T00:01:10.000+02:00
I think we should disable this warning for unknown warnings so that old
pylint versions keep working ok
diff --git a/.pylintrc b/.pylintrc
@@ -22,3 +22,4 @@ disable=
   R0915, # too-many-statements
   W0511, # fixme
   W0603, # global-statement
+  R0022, # useless-option-value
