Remove user's font cache
This works around the slow startup issues that people have seen with qt5 applications installed via conda.
Refs https://code.ornl.gov/sns-hfir-scse/diffraction/powder/powder-diffraction/-/issues/452
This works around the slow startup issues that people have seen with qt5 applications installed via conda.
Refs https://code.ornl.gov/sns-hfir-scse/diffraction/powder/powder-diffraction/-/issues/452