Disable Windows CPP test (#3613)

The test executable is not found. Need to investigate more later.

.github/scripts/unittest-windows/install.sh

@@ -47,7 +47,6 @@ printf "* Installing fsspec\n"
 pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org fsspec
 
 printf "* Installing torchaudio\n"
-export BUILD_CPP_TEST=1
 "$root_dir/packaging/vc_env_helper.bat" python setup.py install
 
 # 3. Install Test tools

.github/scripts/unittest-windows/run_test.sh

@@ -11,13 +11,6 @@ source "$this_dir/set_cuda_envs.sh"
 python -m torch.utils.collect_env
 env | grep TORCHAUDIO || true
 
-(
-    cd build/temp*/test/cpp
-    ctest
-)
-
-(
-    cd test
-    pytest --cov=torchaudio --junitxml=${RUNNER_TEST_RESULTS_DIR}/junit.xml -v --durations 20 torchaudio_unittest
-    coverage html
-)
+cd test
+pytest --cov=torchaudio --junitxml=${RUNNER_TEST_RESULTS_DIR}/junit.xml -v --durations 20 torchaudio_unittest
+coverage html