refactor: remove Pure Usage subscription and stripe_price_id from use… #5754

Job	Run time
build-and-check	2m 56s
test-integration-packages/internal	1m 2s
test-integration-packages/billing	1m 10s
test-integration-common	39s
test-integration-web	41s
test-packages/agent-runtime	38s
test-integration-cli	48s
test-packages/billing	41s
test-integration-packages/agent-runtime	47s
test-.agents	41s
test-common	48s
test-web	46s
test-packages/internal	45s
test-sdk	43s
test-cli	55s
test-integration-sdk	41s
	14m 41s

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