Remove Allowed Formats module, as it was added in Drupal ~10.1.0 core

Problem/Motivation

• #784672: Allow text field to enforce a specific text format
• #3324446: Allowed formats are in Drupal 10.1 now, add an upgrade path
• #3323007: Add an option to 'hide filter guidelines' on text fields

Since Drupal 10.1.0, limiting the text formats per field instance is a feature provided by Drupal core. Read https://www.drupal.org/node/3318572 for details.

In the 3.x branch of this module this feature has been removed as obsolete, but the module provide an update path from existing sites to move the allowed formats, as they were stored by the previous versions of the module, to Drupal >=10.1.0 way, in field settings.

The module provides also a feature that allows site builders to hide the formatted text format help and guidelines. Even this feature is still preserved in the 3.x module branch, there is an issue that aims to move it in Drupal core in the future. See https://www.drupal.org/i/3323007.

Proposed resolution

• Remove drupal/allowed_formats from the composer.josn file
• Remove allowed_formats form install: in the .info.yml file

No hook update to uninstall the module
as of #3324446: Allowed formats are in Drupal 10.1 now, add an upgrade path

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ✅ Accessibility and Readability
• ✅ Code review from 1 Varbase core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Release Varbase 10.0.0-beta1, varbase_layout_builder-10.1.0-alpha10, varbase-9.0.16, varbase_layout_builder-10.0.36

Varbase update type

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Issue #3383538: Removed Allowed Formats module, as it was added in Drupal ~10.1.0 core
  

  Since Drupal 10.1.0, limiting the text formats per field instance is a feature provided by Drupal core. Read https://www.drupal.org/node/3318572 for details.

  In the 3.x branch of this module this feature has been removed as obsolete, but the module provide an update path from existing sites to move the allowed formats, as they were stored by the previous versions of the module, to Drupal >=10.1.0 way, in field settings.

  The module provides also a feature that allows site builders to hide the formatted text format help and guidelines. Even this feature is still preserved in the 3.x module branch, there is an issue that aims to move it in Drupal core in the future. See https://www.drupal.org/i/3323007.