trumbowyg: remove 229 keycode handling
trumbowyg: remove 229 keycode handling

handling of keycode 229 as composition doesn't work on android chrome
browser. i'm not sure what the purpose of this handling was anyway. it
seems to work fine without it.

see https://github.com/Alex-D/Trumbowyg/issues/290

panter/mykonote,panter/mykonote,panter/mykonote