test: remove dead CLI test code #6035

Job	Run time
build-and-check	3m 10s
test-integration-packages/internal	1m 14s
test-integration-common	38s
test-integration-web	46s
test-integration-sdk	1m 21s
test-packages/billing	46s
test-packages/agent-runtime	50s
test-integration-packages/billing	1m 1s
test-common	43s
test-sdk	46s
test-web	50s
test-packages/internal	42s
test-.agents	43s
test-cli	59s
test-integration-packages/agent-runtime	51s
test-integration-cli	47s
	16m 7s

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