fix #299 re duplicated interface methods

Twitter4J is an open-sourced, mavenized and Google App Engine safe Java library for the Twitter API which is released under the Apache License 2.0.

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Status: open

Owner: nobody

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Updated: 2019-08-23

Created: 2018-10-16

Creator: Anonymous

Private: No

Originally created by: SingingBush

As per [#299] it looks like there was probably a mistake when merging some branch. This PR simple removes the duplicated methods