message: test: Fix linter issue
diff: @@ -20,7 +20,6 @@ from test_framework.messages import (
  from test_framework.mininode import P2PInterface
  from test_framework.script import MAX_SCRIPT_ELEMENT_SIZE
  from test_framework.test_framework import BitcoinTestFramework
  -from test_framework.util import assert_equal
  class FilterNode(P2PInterface):
  