Remove V2 countdown from sidebar #2154

Job	Run time
typecheck / typecheck	1m 24s
units / 🧪 Unit Tests	1m 23s
e2e / 🧪 CLI v3 tests (ubuntu-latest - npm)	1m 23s
e2e / 🧪 CLI v3 tests (ubuntu-latest - pnpm)	1m 11s
e2e / 🧪 CLI v3 tests (windows-latest - npm)	1m 9s
e2e / 🧪 CLI v3 tests (windows-latest - pnpm)	1m 9s
	7m 39s

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