refactor: remove store kv dependency

[tac0turtle]

Description

The kv.Pair(s) is needed for testing and to marshal the subspace key response. This is used for only the params module from my understanding. If we refactor the query interface (which I think we should) we should remove this dep.

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[sonarqubecloud]

[Cosmos SDK - SimApp] Kudos, SonarCloud Quality Gate passed!   

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[sonarqubecloud]

[Cosmos SDK] Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
No Duplication information