Is it possible to remove the Update Task Due Date option for a Workflow Task in the Vault Workflow Flyout Menu?
It is not possible to remove the Update Task Due Date option in the Workflow Flyout Menu for any Workflow Task in Vault. This is working as designed.
The Update Task Due Date option allows a user to update or provide a Due Date for a Workflow Task while a document is in an active workflow.
Vault Workflow Documentation: Managing Active Document Workflows