Add --skip-server-binaries and --skip-pip-install flags to build.sh and pass them in ci/run_in_torch_env.py to skip unused C++ server targets and redundant requirements.txt installation during PyTorch CI benchmark builds.

Add --skip-server-binaries and --skip-pip-install flags to build.sh and pass them in ci/run_in_torch_env.py to skip unused C++ server targets and redundant requirements.txt installation during PyTorch CI benchmark builds. #2527