chore: remove group go.mod

[aleem1314]

Description

Closes: #10970

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Author Checklist

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please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

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• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[amaury1093]

We also discussed removing x/nft's go.mod. Can we do it in the same PR? (and cc @marbar3778, ok to remove nft's go mod too for now?)

[blushi]

We also discussed removing x/nft's go.mod. Can we do it in the same PR? (and cc @marbar3778, ok to remove nft's go mod too for now?)

it seems like a different approach has been taken for x/nft, see #10970 (comment)

EDIT: it seems like x/nft doesn't actually have any go.mod for now (#10578)

[blushi]

could you resolve the conflicts? @aleem1314