scripted-diff: test: Remove brackets after assert

-BEGIN VERIFY SCRIPT-
sed -i --regexp-extended -e 's/assert ?\((.+)\)(( )*)?(#.*)?$/assert \1\3\3\4/g' $(git grep -l --extended-regexp 'assert ?\(' test)
-END VERIFY SCRIPT-

test/functional/rpc_named_arguments.py

@@ -17,7 +17,7 @@ class NamedArgumentTest(BitcoinTestFramework):
     def run_test(self):
         node = self.nodes[0]
         h = node.help(command='getblockchaininfo')
-        assert(h.startswith('getblockchaininfo\n'))
+        assert h.startswith('getblockchaininfo\n')
 
         assert_raises_rpc_error(-8, 'Unknown named parameter', node.help, random='getblockchaininfo')