Remove duplicate author

remove duplicate author (mail changed)

Author: cnderrauber

AUTHORS.txt

@@ -41,7 +41,6 @@ chenkaiC4 <chenkaic4@gmail.com>
 Chris Hiszpanski <chris@hiszpanski.name>
 Christopher Fry <chris.fry@getcruise.com>
 Clayton McCray <cpmdmccray@gmail.com>
-cnderrauber <zengjie9004@gmail.com>
 cnderrauber <zengjiestc@gmail.com>
 cyannuk <cyannuk@issart.com>
 David Hamilton <davidhamiltron@gmail.com>