Clean up UpdaterForm

Issue information

From user: tedbow

Contribution record

Fork management

Problem/Motivation

UpdaterForm was Copied from 9.3.x \Drupal\update\Form\UpdateManagerUpdate originally

This form was for updating many projects and now that we only have core there is probably a lot stuff we don't need

Proposed resolution

Edited by drupalbot
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information