refactor(testutil)!: remove `cmdtest` #75967

Job	Run time
split-test-files	26s
test-clientv2	47s
test-core	34s
test-coretesting	33s
test-depinject	33s
test-errors	33s
test-indexer-postgres	37s
test-integration	8m 15s
test-math	33s
test-schema	36s
test-schema-testing	29s
test-simapp	1m 45s
test-simapp-v2	5m 45s
test-sim-nondeterminism	6m 52s
test-system	8m 14s
test-collections	44s
test-collections-protocodec	33s
test-confix	33s
test-cosmovisor	27s
test-hubl	34s
test-orm	35s
test-store	40s
test-log	36s
test-store-v2	39s
test-x-accounts	36s
test-x-accounts-base	39s
test-x-accounts-lockup	34s
test-x-accounts-multisig	34s
test-x-circuit	36s
test-x-nft	50s
test-x-tx	28s
test-x-authz	44s
test-x-bank	46s
test-x-consensus	32s
test-x-distribution	39s
test-x-epochs	41s
test-x-evidence	31s
test-x-feegrant	43s
test-x-gov	33s
test-x-group	32s
test-x-mint	34s
test-x-params	31s
test-x-protocolpool	36s
test-x-slashing	41s
test-x-staking	34s
test-x-upgrade	40s
tests (00)	1s
tests (01)	1s
tests (02)	1s
tests (03)	1s
repo-analysis	1s
	55m 32s

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