Remove wait-for command from tmux CLI agent #6000

Job	Run time
build-and-check	3m 5s
test-integration-packages/billing	1m 6s
test-integration-packages/internal	59s
test-integration-sdk	1m 46s
test-integration-web	44s
test-integration-packages/agent-runtime	42s
test-integration-common	43s
test-packages/internal	52s
test-integration-cli	52s
test-web	49s
test-cli	59s
test-sdk	46s
test-packages/billing	47s
test-.agents	51s
test-common	43s
test-packages/agent-runtime	42s
	16m 26s

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