Is removing ibus enough?

I am using Kubuntu 14.04.

I had to completely remove ibus because not only it bugged chromium, but also I do not need it at all.

Unfortunately, I have the feeling it is not completely disabled because I have warning messages in some application logs:

x@aspire6930g:~$ konsole
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
x@aspire6930g:~$ Bus::open: Connect ibus failed!
IBusInputContext::createInputContext: no connection to ibus-daemon 

As the ibus package no longer exists on my system, there is no ibus-daemon.

My question is : what additional step should I perform to tell the system that I do not use ibus ?

1. Run qtconfig-qt4 → Interface tab
2. Set Default Input Method to xim

If for some reasons didn't work, try using im-config:

1. Check for available & default input systems:

   $ im-config -l
   ibus xim
   
   $ im-config -m
   default
   ibus
   ibus
   

2. Set other one, xim is the standard for X server

   im-config -n xim