Remove linking of gettext for macOS

Apprently, it's already linked on appveyor images

scripts/osx-translations.sh

@@ -1,3 +1,2 @@
 #!/usr/bin/env bash
-brew link --force gettext
-find locale/ -type f -name "*.po" -exec msgen "{}" -o "{}" \;
+find locale/ -type f -name "*.po" -exec msgen "{}" -o "{}" \;