deactivate

verb4

1. •
   to make something inactive or no longer effective

   • The technician deactivated the alarm system before repairs began.
   • You should deactivate your old account to protect your privacy.
2. •
   to prevent the action of a biochemical agent (such as an enzyme)

   • The chemical agent was deactivated by exposure to heat.
3. •
   to remove a person or piece of hardware from active military service
4. •
   (Internet, euphemistic) to commit suicide