Remove v2 code from v1 #2662

Job	Run time
Build and Test on swiftlang/swift:nightly-jammy	4m 35s
Build and Test on swift:6.0-jammy	3m 49s
License Header and Formatting Checks	1m 57s
Build and Test on swift:5.10.1-noble	4m 0s
Integration Tests on swiftlang/swift:nightly-jammy	6m 21s
Performance Tests on swiftlang/swift:nightly-jammy	50s
Integration Tests on swift:6.0-jammy	4m 31s
Build and Test on swift:5.9-jammy	3m 21s
Performance Tests on swift:6.0-jammy	54s
Integration Tests on swift:5.10.1-noble	5m 25s
Performance Tests on swift:5.10.1-noble	30s
Integration Tests on swift:5.9-jammy	4m 25s
Performance Tests on swift:5.9-jammy	29s
	41m 7s

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