Pacify pylint

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/scripts/generate_bignum_tests.py b/tests/scripts/generate_bignum_tests.py
index f1b2440..eee2f65 100755
--- a/tests/scripts/generate_bignum_tests.py
+++ b/tests/scripts/generate_bignum_tests.py
@@ -85,6 +85,7 @@
     ]
 
     def description_suffix(self) -> str:
+        #pylint: disable=no-self-use # derived classes need self
         """Text to add at the end of the test case description."""
         return ""