Comment 2 for bug 2035226

More details is found in Ian and my comments in the i18n review [0]. I will add the summary here.

After checking the history of the UUID filtering, it was introduced in [1] when our CI uses sphinx <1.3 and was copied to the related scripts. sphinx >=1.3 no longer adds UUID per string by default (in gettext_uuid option [2]) and our CI does not enable this option, so we can safely drop the UUID filtering.

[0] https://review.opendev.org/c/openstack/i18n/+/894512
[1] https://opendev.org/openstack/openstack-manuals/commit/993647f316fbe33a513baffb5cc4ad156355da8a
[2] https://www.sphinx-doc.org/en/master/usage/configuration.html#confval-gettext_uuid