[flang-commits] [flang] [llvm] [flang-rt] Remove library dependency from flang-rt to offload (PR #198793)

[Kelvin Li via flang-commits]

kkwli wrote:

@jhuber6 The patch causes the undefined symbol error on MacOS.
```
Undefined symbols for architecture arm64:
  "___tgt_register_rpc_callback", referenced from:
      Fortran::runtime::io::RegisterRPCHandlers() in io-api-server.cpp.o
      Fortran::runtime::io::RegisterRPCHandlers() in io-api-server.cpp.o
ld: symbol(s) not found for architecture arm64

```

cc @luporl 

https://github.com/llvm/llvm-project/pull/198793