Delete some agents, move some to graveyard #5107

Job	Run time
build-and-check	2m 31s
test-common	47s
test-.agents	37s
test-packages/internal	38s
test-backend	47s
test-sdk	55s
test-npm-app	39s
test-integration-cli	41s
test-integration-npm-app	38s
test-web	41s
test-integration-backend	40s
test-packages/agent-runtime	49s
test-integration-packages/agent-runtime	38s
test-integration-.agents	1m 16s
test-integration-packages/internal	44s
test-packages/billing	45s
test-integration-sdk	54s
test-integration-packages/billing	43s
test-integration-common	37s
test-integration-web	41s
test-cli	1m 15s
	17m 56s

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