aLangMap is a std::map that is written but never used, so drop it.

Change-Id: I8f5184c58fbe812beab8580349535920645e062e
Reviewed-on: https://gerrit.libreoffice.org/781Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>
Tested-by: Markus Mohrhard <markus.mohrhard@googlemail.com>