empty/untransated locales in Tor Launcher

While working on #11699 (moved), brade and I noticed that some Tor Launcher translations only have a few translated strings. For the DTD files, most of the strings are "" or they contain the English text; within the properties files everything is commented out.

For example: https://gitweb.torproject.org/translation.git/blob/4de6dc5543f73b110d0c5d22ce099de6d56d462b:/pl_PL/network-settings.dtd

There appears to be a perfectly good Polish translation under pl (instead of pl_PL). On Transifex, I only see one Polish translation (pl), probably the good one.

Locales that seem to have this problem: ca-ES, ca@valencia, ms, pl-PL, sv-SE, zh-CN.GB2312, zh

Should these locales just be removed from translation.git and tor-launcher.git? Where did they come from?