Revert "Pass -Xcc -std=c++2b to Swift when CLANG_CXX_LANGUAGE_STANDARD is set to c++2b" - #1622

Revert "Pass -Xcc -std=c++2b to Swift when CLANG_CXX_LANGUAGE_STANDARD is set to c++2b"#1622

mhrawdon merged 1 commit into

swiftlang:mainswiftlang/swift-build:mainfrom

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