Is it possible to remove all label translations for a specific language in the Translation Workbench, just reset everything? Removing them manually one by one is not an option. I tried playing with import/export, but .stf import won't accept blank values. Only workaround is to upload translations that are identical to original values, but this only works as long the original value is not changed.
I just found an answer to this in the docs (Translation Files):
Delete a translation by replacing the desired value in the TRANSLATION column in either section with a left and right angle bracket pair (< >). When the Bilingual file is imported, the label reverts to its original value