Revert "[clang-repl] Keep the first llvm::Module empty to avoid invalid memory access. (#89031)"

This reverts commit ca090452d64e229b539a66379a3be891c4e8f3d8 and
1faf3148fdef34ce0d556ec6a4049e06cbde71b3 because it broke a darwin bot.

GitOrigin-RevId: adc4f6233df734fbe3793118ecc89d3584e0c90f
2 files changed