For unused variables reported by pyflakes, either remove the variable,

suppress the warning, or fix a bug (if the wrong variable was used).
refs #2450

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

qa/rpc-tests/rpcbind_test.py

@@ -120,7 +120,6 @@ def main():
     check_json_precision()
 
     success = False
-    nodes = []
     try:
         print("Initializing test directory "+options.tmpdir)
         if not os.path.isdir(options.tmpdir):