Update Checklist API module from 2.1.1 to ~2.1.0 and remove committed patches

Problem/Motivation

Checklist API 2.1.3 was released on: 23 Jun 2023 by: Rajeshreeputra
https://www.drupal.org/project/checklistapi/releases/2.1.3

Proposed resolution

• Change drupal/checklistapi to ~1.2.0 in the composer.json file.
• Remove committed patches

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-rc1, varbase_core-10.0.0-rc3, varbase-9.0.16, varbase_core-9.0.67, varbase_core-9.1.3

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 #3393644: Updated Checklist API module from 2.1.1 to ~2.1.0 and removed committed patches