Remove max token output limit #5916

Job	Run time
build-and-check	2m 57s
test-integration-packages/internal	1m 6s
test-integration-packages/billing	1m 2s
test-integration-sdk	1m 49s
test-.agents	46s
test-integration-common	48s
test-integration-web	46s
test-common	41s
test-web	51s
test-sdk	43s
test-integration-cli	42s
test-packages/agent-runtime	46s
test-integration-packages/agent-runtime	49s
test-packages/billing	57s
test-cli	1m 32s
test-packages/internal	43s
	16m 58s

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