Remove alternative text if there are none

Julien LepillerSun Jul 18 19:26:41+0200 2021

86470b7

nani/app/furiganatextview/src/main
namelast commitdate
AndroidManifest.xmlAdd furiganaMon Apr 15 20:09:48+0200 2019
java/Add furiganaMon Apr 15 20:09:48+0200 2019
res/Add furiganaMon Apr 15 20:09:48+0200 2019