python: Fix removing the TOFU database.
* lang/python/Makefile.am (CLEANFILES): Move 'tofu.db'... * lang/python/tests/Makefile.am (CLEANFILES): ... here.
- Fixes-commit: 78cded7560ee103720f6acadb694742b481d2190
- Signed-off-by: Justus Winter <justus@g10code.com>