Agree to relicense to dual GPLv2/Apache v2.

relicensing-apachev2.txt

@@ -54,7 +54,6 @@ Sam Vilain <svilain@saymedia.com>
 Stefan Zimmermann <zimmermann.code@gmail.com>
 Takeshi Kanemoto <tak.kanemoto@gmail.com>
 Timo Schmid <info@bluec0re.eu>
-Tommy Yu <tommy.yu@auckland.ac.nz>
 Travis Cline <travis.cline@gmail.com>
 Yifan Zhang <yifan@wavii.com>
 Yuval Langer <yuval.langer@gmail.com>