Remove dead code #19617

Job	Run time
ʦ Typecheck (STATIC ANALYSIS) (20.x, 10.x)	4m 3s
⬣ ESLint (STATIC ANALYSIS) (20.x, 10.x)	2m 10s
🔪 Knip (DEAD CODE) (20.x, 10.x)	46s
👾 Unit Test (TESTING) (20.x, 10.x)	2m 31s
🚧 Build (20.x, 3.8.6, 21, 10.x)	5m 56s
	15m 26s

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