llvm-project

cb6f132b - Revert "Reland [clang][modules-driver] Add scanner to detect C++20 module presence" (#149900)

Revert "Reland [clang][modules-driver] Add scanner to detect C++20 module presence" (#149900) Reverts llvm/llvm-project#147630. This causes a linker error caused by linking the driver against the lexer.