Disable pylint 2.7.0 duplicate-code warning (#947)

pylint 2.7.0 raises a lot of duplicate-code warnings. This PR disables the duplicate-code check.

Fixes #946.

Author: seisman

.pylintrc

@@ -141,7 +141,8 @@ disable=print-statement,
         comprehension-escape,
         attribute-defined-outside-init,
         bad-continuation,
-        import-error
+        import-error,
+        duplicate-code
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option