Bug#964996: ibus-unikey: Remove deps on ibus IM module packages

[Changwoo Ryu]

Package: ibus-unikey
Version: 0.7.0~beta1-0.1
Severity: normal

Currently ibus-unikey depends on ibus-gtk and ibus-gtk3.

These IM module package are for supporting UIs and they should not be in 
Depends of ibus language engine packages.