Remove the Supermarket 'Version Tag Metric' metric

[tas50]

This is something we should check in Cookstyle instead. Once #2181 is complete we should remove this metric.

[saghoshprogress]

We need to remove this metric.

[saghoshprogress]

We need to verify the same Metric in cookstyle PR before we remove this Metric.

@sanga1794 , @msys-sgarg Please check and confirm

[msys-sgarg]

@skkprogress @tas50

• Version Tag metric is not only taking care of version tag in metadata.rb but also is checking whether attribute source_url is present in metadata or not , also it should be containing valid github url value.. We display failure - Failure: To pass this metric, your cookbook metadata must include a source url, the source url must be in the form of https://github.com/user/repo, and your repo must include a tag that matches this cookbook version number like this in case of invalid source_url.

• Also, cookstyle will not cover the case where version tag is missing altogether .. only if version tag is present and contains an invalid version cookstyle will throw an error

Please let me know if still version tag metric is ok to be removed ?