[sr] deactivate support for Serbian for now, as agreed with its maintainer
[sr] deactivate support for Serbian for now, as agreed with its maintainer

languagetool-org/languagetool,languagetool-org/languagetool,languagetool-org/languagetool,jimregan/languagetool,jimregan/languagetool,jimregan/languagetool,jimregan/languagetool,languagetool-org/languagetool,languagetool-org/languagetool,jimregan/languagetool