Remove V2 countdown from sidebar #2155

Job	Run time
typecheck / typecheck	3m 23s
units / 🧪 Unit Tests	2m 10s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	1m 47s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	1m 45s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	4m 30s
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	5m 2s
	18m 37s

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