Revert "Translate GDK_KEY_KP_Decimal according to locale"
Revert "Translate GDK_KEY_KP_Decimal according to locale"

This reverts commit 3b65a6a42ed2d4d2ecdcec94163ce0b748e707fc.

Too much controversy for this minor improvement.
See https://bugzilla.gnome.org/show_bug.cgi?id=756751

Distrotech/gtk,Distrotech/gtk,Distrotech/gtk,Distrotech/gtk,Distrotech/gtk