Deprecate redundant tags_enabled input

[nitrocode]

Describe the Bug

See #44 (comment)

I know this is an old change. I was reviewing this from git blame because i was surprised we need a tags_enabled var when the tags var can be set to null or an empty map {}. The original change is in the referenced PR and the inclusion of managed policies is in this PR.

If the tags var can be used to disable tagging, can we consider deprecating tags_enabled var?

I pinged the original author and approver and we all agreed that this input is no longer needed.

Expected Behavior

See above

Steps to Reproduce

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Screenshots

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Environment

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Additional Context

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