Drop pip listing (causing error?)

Author: matthew-brett

.github/workflows/build.sh

@@ -25,7 +25,6 @@ echo "::group::Build wheel"
   export WHEEL_SDIR=wheelhouse
   clean_code
   build_wheel
-  pip list | grep numpy
   ls -l "${GITHUB_WORKSPACE}/${WHEEL_SDIR}/"
 echo "::endgroup::"