Remove Composer v1 Code and Related Feature Flags

[sachin-sandhu]

What are you trying to accomplish?

Preface: Copy => As Dependabot no longer supports Composer v1, this issue tracks the removal of all Composer v1-specific code, including feature flags associated with its deprecation and unsupported status (composer_v1_deprecation_warning and composer_v1_unsupported_error). This cleanup will ensure that only Composer v2 and higher versions are supported moving forward.

Removal process: Following steps were performed to remove the support for v1

1. Delete v1 folder (composer/helpers/v1) which removes all references to V1 code.
2. Adjust docker file composer/Dockerfile to remove the reference to v1 code.
3. Remove all test cases related to v1 in from spec.rb files.
4. Remove the feature flags composer_v1_deprecation_warning, composer_v1_unsupported_error and adjust the code accordingly.
5. Adjust new test cases related to V2 by dropping reference to feature flag and making changes accordingly.

Anything you want to highlight for special attention from reviewers?

How will you know you've accomplished your goal?

Checklist

• I have run the complete test suite to ensure all tests and linters pass.
• I have thoroughly tested my code changes to ensure they work as expected, including adding additional tests for new functionality.
• I have written clear and descriptive commit messages.
• I have provided a detailed description of the changes in the pull request, including the problem it addresses, how it fixes the problem, and any relevant details about the implementation.
• I have ensured that the code is well-documented and easy to understand.

[abdulapopoola]

This PR doesn't include the removal of the v1 folder, will that be in a separate PR?

[sachin-sandhu]

@abdulapopoola , Had some issues pushing v1 delete changes , pushed them now.

[abdulapopoola]

In a separate PR to avoid bloating up this PR, we should look at renaming the v2 folder too since that is the only version left.

[kbukum1]

I left some comments. Other then that looks good to me.

[kbukum1]

LGTM