fix(uninstall): remove tag rights during uninstall

[MyvTsv]

• I have performed a self-review of my code.
• I have added tests (when available) that prove my fix is effective or that my feature works.
• I have updated the CHANGELOG with a short functional description of the fix or new feature.
• This change requires a documentation update.

Description

• It fixes fix(tag_dropdown): fix tag dropdown to allow tag creation directly from the field #349
• The plugin's permissions were still present in the glpi_profilrights table after uninstallation

Screenshots (if appropriate):