Solution 1 (Preferred):
Go to Transaction OMJJ
Select the Movement type to be activated
Remove all the transaction codes mentioned against this movement type under allow transaction tab.
Consider this solution only if the above solution doesn't work.
Related: Movement Types in SAP MM Inventory Management
Delete the movement type from the standard table. Ensure that you really don't want to use this movement type before deleting the entry or would never want to recreate the movement type.
It is possible to recreate the deleted movement type, but needs to be imported either from the client 000 or from the client this movement type is not deleted. You can not manually create/recreate the movement types in the standard SAP number range by creating them again.