When a tax is set to inactive, the fiscal positions mapping other taxes to it continued to apply, disregarding the fact that it shouldn't be used anymore. Not anymore with this fix.

closes odoo/odoo#154464

X-original-commit: 91ad6a0c
Signed-off-by: John Laterre (jol) <jol@odoo.com>
Signed-off-by: Olivier Colson (oco) <oco@odoo.com>