emoji test.

src/docs/asciidoc/jme3/advanced/custom_controls.adoc

@@ -4,7 +4,6 @@
 :revdate: 2016/03/17 20:48
 :relfileprefix: ../../
 :imagesdir: ../..
-:stylesheet: twemoji-awesome.css
 ifdef::env-github,env-browser[:outfilesuffix: .adoc]