## Description
Removed the code for `ab_mock_mongo_schema_enabled`,
`ab_gsheet_schema_enabled` feature flags as they both have been rolled
out to 100% of the users on Nov 20, 2023
#### PR fixes following issue(s)
Fixes#28971
> if no issue exists, please create an issue and ask the maintainers
about this first
>
>
#### Media
> A video or a GIF is preferred. when using Loom, don’t embed because it
looks like it’s a GIF. instead, just link to the video
>
>
#### Type of change
> Please delete options that are not relevant.
- Bug fix (non-breaking change which fixes an issue)
- New feature (non-breaking change which adds functionality)
- Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- Chore (housekeeping or task changes that don't impact user perception)
- This change requires a documentation update
>
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## Testing
>
#### How Has This Been Tested?
> Please describe the tests that you ran to verify your changes. Also
list any relevant details for your test configuration.
> Delete anything that is not relevant
- [ ] Manual
- [ ] JUnit
- [ ] Jest
- [ ] Cypress
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>
#### Test Plan
> Add Testsmith test cases links that relate to this PR
>
>
#### Issues raised during DP testing
> Link issues raised during DP testing for better visiblity and tracking
(copy link from comments dropped on this PR)
>
>
>
## Checklist:
#### Dev activity
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag
#### QA activity:
- [ ] [Speedbreak
features](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#speedbreakers-)
have been covered
- [ ] Test plan covers all impacted features and [areas of
interest](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#areas-of-interest-)
- [ ] Test plan has been peer reviewed by project stakeholders and other
QA members
- [ ] Manually tested functionality on DP
- [ ] We had an implementation alignment call with stakeholders post QA
Round 2
- [ ] Cypress test cases have been added and approved by SDET/manual QA
- [ ] Added `Test Plan Approved` label after Cypress tests were reviewed
- [ ] Added `Test Plan Approved` label after JUnit tests were reviewed
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Streamlined the process for generating CRUD pages from various data
sources.
- Enhanced the test suite for better coverage of data source
functionalities.
- **Bug Fixes**
- Fixed issues with the CRUD generation logic and improved the
reliability of deployment mode verification.
- **Refactor**
- Removed deprecated feature flags related to data source schema
previews.
- Simplified the logic for determining if a plugin can preview data.
- **Chores**
- Updated Cypress tests to align with the latest CRUD generation methods
and removed unnecessary feature flag setups.
- Cleaned up test code for better maintainability and readability.
- **Documentation**
- No visible documentation changes for end-users.
- **Style**
- No visible style changes for end-users.
- **Tests**
- Refined end-to-end tests to reflect changes in feature flag
management.
- **Revert**
- No reverts in this release.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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