Remove DenomTrace and DenomTraces querier rpc's

[colin-axner]

Summary

DenomTrace and DenomTraces rpc were added back to fix build issues in e2e tests due to a dependency using the types. see aa1a5fd

Once the dependencies are resolved, we should be able to remove these rpc's outright and make the DenomTrace internal and only for migration handlers

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[DimitrisJim]

In order to keep the context in issue, the error encountered in original PR was:

../../../../../../pkg/mod/github.com/misko9/go-substrate-rpc-client/[email protected]/rpc/ibc/query_denom.go:19:24: undefined: transfertypes.QueryDenomTraceResponse
../../../../../../pkg/mod/github.com/misko9/go-substrate-rpc-client/[email protected]/rpc/ibc/query_denom.go:30:17: undefined: transfertypes.QueryDenomTracesResponse

Seems go-substrate-rpc-client calls transfer's grpc client and requires references to the response types. This is an indirect dependency needed for the 08-wasm tests.

[DimitrisJim]

RPCs have been removed, only the Resp types remain which will ideally be axed after go-substrate-rpc-client stops holding a ref to them.

[DimitrisJim]

Re-slapping needs discussion. Our current blocker bumping interchaintest to commit which doesn't include the rpcs:

Bumping interchain test to include fork of go-substrate-rpc-client that does not include the DenomTrace Response types now brings in interchain-security which depends on ConnectionI which we removed :lolcry:. Can't win.

../../../../../go/pkg/mod/github.com/cosmos/interchain-security/[email protected]/x/ccv/types/expected_keepers.go:85:87: undefined: ibcexported.ConnectionI
FAIL	github.com/cosmos/ibc-go/e2e/tests/core/02-client [build failed]```

[colin-axner]

Pulling off v9 milestone as we can get to it when we get to it. Would be nice before v9, but not strictly necessary

[DimitrisJim]

oh, think we can rm these now since I branched off misko's commit that removed these (well, I can just rm them myself if that wasn't the case since we're on my forks 😅). Will whip the broom out for em if my memory serves me right.