onnxruntime

df11c859 - Download protoc.exe from nuget when cross-compiling (#15395)

Download protoc.exe from nuget when cross-compiling (#15395) ### Description 1. The protoc package on nuget.org contains binaries for Windows_x86/Windows_x64/Linux_x86/Linux_x64/MacOS_x64, which can cover most use cases. Though it doesn't have binaries for AMR64, they are only needed when we cross-compile for Intel CPUs on ARM CPUs. It is rare. When you have such a need, you always can build protoc from source by yourself and pass it to build.py as "--path_to_protoc_exe". Or if you have security concerns that you don't want to use prebuilt binaries from outside, you can do the same thing. 2. Remove GoogleTestAdapter related thing. That part of code is out of maintain. ### Motivation and Context As a follow-up of PR #15190.