po: Remove translated expanded-acronym

be@latin contained a translated for the expanded CGM acronym. There
doesn't seem to be a way to avoid have the translation merged back into
the XML file, so remove the translation instead.

po/be@latin.po

@@ -266,10 +266,6 @@ msgstr "Fajł naładaŭ Citrix ICA"
 msgid "Commodore 64 audio"
 msgstr "Aŭdyjo Commodore 64"
 
-#: ../freedesktop.org.xml.in.h:65
-msgid "Computer Graphics Metafile"
-msgstr "Metafajł Computer Graphics"
-
 #: ../freedesktop.org.xml.in.h:66
 msgid "Corel Draw drawing"
 msgstr "Rysunak Corel Draw"