Remove legacy licensing telemetry #955

Job	Run time
Cockpit — secret-gated integration	1m 10s
Library — lint / test / build	3m 10s
Website — lint / build	1m 44s
examples/chat — aimock e2e	2m 26s
Website — e2e	2m 26s
Cockpit — e2e	3m 18s
Cockpit — representative capability smoke	1m 17s
Cockpit — build all examples	5m 9s
Cockpit — build / test	1m 42s
Cockpit — deploy smoke dry-run	1m 20s
examples/chat — python smoke	1m 29s
PostHog — dashboards-as-code drift check	1m 8s
Production smoke	0s
Deploy → Vercel	0s
	26m 19s

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