diff --git a/tools/ci_build/build.py b/tools/ci_build/build.py
index 7b7bbea59e..e5447eee8a 100755
--- a/tools/ci_build/build.py
+++ b/tools/ci_build/build.py
@@ -962,80 +962,6 @@ def setup_cuda_vars(args):
                 .format(
                     cuda_home, cuda_home_valid, cudnn_home, cudnn_home_valid))
 
-        # Our CI build machines already have the env vars setup
-        if is_windows() and 'AGENT_VERSION' not in os.environ:
-            # Validate that the cudnn_home is pointing at
-            # the right level.
-            if not os.path.exists(os.path.join(cudnn_home, "bin")):
-                raise BuildError(
-                    "cudnn_home path should include the 'cuda' folder, and "
-                    "must contain the CUDNN 'bin' directory.",
-                    "cudnn_home='{}'".format(cudnn_home))
-
-            os.environ["CUDA_PATH"] = cuda_home
-            os.environ["CUDA_TOOLKIT_ROOT_DIR"] = cuda_home
-
-            cuda_bin_path = os.path.join(cuda_home, 'bin')
-            os.environ["CUDA_BIN_PATH"] = cuda_bin_path
-            os.environ["PATH"] += (os.pathsep + cuda_bin_path + os.pathsep +
-                                   os.path.join(cudnn_home, 'bin'))
-            # Add version specific CUDA_PATH_Vx_y value as the
-            # Visual Studio build files require that.
-            version_file = os.path.join(cuda_home, 'version.txt')
-            if not os.path.exists(version_file):
-                raise BuildError(
-                    "No version file found in CUDA install directory. "
-                    "Looked for " + version_file)
-            cuda_major_version = "unknown"
-
-            with open(version_file) as f:
-                # First line of version file should have something
-                # like 'CUDA Version 9.2.148'.
-                first_line = f.readline()
-                m = re.match(r"CUDA Version (\d+).(\d+)", first_line)
-                if not m:
-                    raise BuildError(
-                        "Couldn't read version from first line of " +
-                        version_file)
-
-                cuda_major_version = m.group(1)
-                minor = m.group(2)
-                os.environ["CUDA_PATH_V{}_{}".format(
-                    cuda_major_version, minor)] = cuda_home
-
-            vc_ver_str = os.getenv("VCToolsVersion") or ""
-            vc_ver = vc_ver_str.split(".")
-            if len(vc_ver) != 3:
-                log.warning(
-                    "Unable to automatically verify VS 2017 toolset is "
-                    "compatible with CUDA. Will attempt to use.")
-                log.warning(
-                    "Failed to get valid Visual C++ Tools version from "
-                    "VCToolsVersion environment variable value of '" +
-                    vc_ver_str + "'")
-                log.warning(
-                    "VCToolsVersion is set in a VS 2017 Developer Command "
-                    "shell, or by running "
-                    "'%VS2017INSTALLDIR%\\VC\\Auxiliary\\Build\\vcvars64.bat'")
-                log.warning(
-                    "See build.md in the root ONNXRuntime directory for "
-                    "instructions on installing the Visual C++ 2017 14.11 "
-                    "toolset if needed.")
-
-            elif (cuda_major_version == "9" and vc_ver[0] == "14" and
-                  int(vc_ver[1]) > 11):
-                raise BuildError(
-                    "Visual C++ Tools version not supported by CUDA v9. You "
-                    "must setup the environment to use the 14.11 toolset.",
-                    "Current version is {}. CUDA 9.2 requires version "
-                    "14.11.*".format(vc_ver_str), "If necessary manually "
-                    "install the 14.11 toolset using the Visual Studio 2017 "
-                    "updater.", "See 'Windows CUDA Build' in "
-                    "build.md in the root directory of this repository.")
-
-            # TODO: check if cuda_version >=10.1, when cuda is enabled
-            # and VS version >=2019.
-
     return cuda_home, cudnn_home