Revert "Fix in windows unit test" (#1117)

Author: mischab

.circleci/unittest/windows_optdepts/scripts/environment.yml

@@ -16,4 +16,3 @@ dependencies:
     - pyyaml
     - scipy
     - coverage
-    - msvc-runtime

.circleci/unittest/windows_optdepts/scripts/setup_env.sh

@@ -26,8 +26,6 @@ if [ ! -d "${conda_dir}" ]; then
 fi
 
 eval "$(${conda_dir}/Scripts/conda.exe 'shell.bash' 'hook')"
-conda config --set channel_priority strict
-conda update -n base -c defaults conda
 
 # 2. Create test environment at ./env
 if [ ! -d "${env_dir}" ]; then