Remove scan execution policy action limit warning banner

Why are we doing this work

We need to remove the "upcoming 18.0 action limit warning banner" we introduced in !164809 (merged).

Relevant links

• !164809 (merged)

Non-functional requirements

• Documentation:
• Feature flag:
• Performance:
• Testing:

Implementation plan

• frontend Undo the changes from !164809 (merged)

Verification steps

Create a scan execution policy with a certain number of actions, then set the application setting below that value and verify the warning banner doesn't get rendered.