Detected dangling dependency on deprecated tendermint/tmlibs

[alessio]

Summary of Bug

https://github.com/cosmos/cosmos-sdk/blob/develop/client/keys/show.go#L12 still depends on the tendermint/tmlibs repo, which is dead and should be replaced by tendermint/tendermint

Steps to Reproduce

[ -d vendor/github.com/tendermint/tmlibs ] && echo yes || echo no

Reported by @greg-szabo on Slack

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