Comment # 11 on bug 1057976 from Ulrich Windl

(In reply to Tom���� Chv��tal from comment #10)
As those modules are still there in 42.3, I removed them manually:

# rpm -qa --last |grep immodule
gtk3-immodule-vietnamese-3.20.10-12.1.x86_64  Sa 10 Nov 2018 17:20:10 CET
gtk3-immodule-thai-3.20.10-12.1.x86_64        Sa 10 Nov 2018 17:20:10 CET
gtk3-immodule-inuktitut-3.20.10-12.1.x86_64   Sa 10 Nov 2018 17:20:10 CET
gtk3-immodule-amharic-3.20.10-12.1.x86_64     Sa 10 Nov 2018 17:20:08 CET
gtk2-immodule-thai-2.24.31-14.24.x86_64       Di 31 Okt 2017 01:25:18 CET
gtk2-immodule-inuktitut-2.24.31-14.24.x86_64  Di 31 Okt 2017 01:25:18 CET
gtk2-immodule-amharic-2.24.31-14.24.x86_64    Di 31 Okt 2017 01:25:18 CET
gtk2-immodule-vietnamese-2.24.31-14.24.x86_64 Di 31 Okt 2017 01:25:17 CET

The solution was:
# rpm -ve gtk{2,3}-immodule-{vietnamese,thai,inuktitut,amharic}

(In reply to Michael Andres from comment #3)
[...]
> So '2017-09-11 11:03:10' is the time the packages were '|install|'ed. The
> history should also contain a line (somewhere above) telling which
> '|command|' was executed. 

Actually the installation date seems much older (2014):
2014-10-26
09:08:39|install|gtk2-theming-engine-adwaita|3.14.0-1.1|x86_64|root@opensuse|InstallationImage|166210dd4f1c6608121fb6de66142d50c4717a50915cdc07691749014663426c|
2014-10-26
09:08:39|install|gtk2-immodule-vietnamese|2.24.24-4.1.9|x86_64|root@opensuse|InstallationImage|d389bd9681d6988bf705cb824ce175c1c259a0002967fd260696a80cc490b68d|
2014-10-26
09:08:39|install|gtk2-immodule-thai|2.24.24-4.1.9|x86_64|root@opensuse|InstallationImage|5ea0bf5f03c6f502468a4b808c0f820133fd85279478e084f08a7b1fd064c78f|
2014-10-26
09:08:39|install|gtk2-immodule-inuktitut|2.24.24-4.1.9|x86_64|root@opensuse|InstallationImage|69ef6e4505d9de31c54c80abd68c69c7eb9ab3e22e7ff6f9ceca238e612e6736|
2014-10-26
09:08:39|install|gtk2-immodule-amharic|2.24.24-4.1.9|x86_64|root@opensuse|InstallationImage|8a6141140b18d5fa7ae7312617e43de7820598c033beee13745eea89da3519d8|
2014-10-26
09:08:39|install|gtk2-engine-hcengine|2.20.2-18.1.4|x86_64|root@opensuse|InstallationImage|0f79a95ab60be955d4e32967173c8a5f85ec7dcc7b105a01ce383c34fd62c487|

>From my personal history I guess it was a new install with openSUSE 13.2.