Clean stale autostart source references from translations

po/nb.po

@@ -19,11 +19,9 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
-#: cthulhu-autostart.desktop.in:3
 msgid "Cthulhu Screen Reader"
 msgstr "Cthulhu skjermleser"
 
-#: cthulhu-autostart.desktop.in:11
 msgid "screen;reader;accessibility;speech;braille;"
 msgstr "skjerm;leser;tilgjengelighet;tale;blindeskrift;"