ghostscript requires ghostscript-fonts in SPEC file. but, ghostscript-font also requires ghostscript in SPEC file. So, RPM of ghostscript and ghostscript-fonts can't install without --nodeps option. `Requires: ' tag in Ghostscirpt-fonts is not required.
Uninstall both ghostscript and ghostscritpt-fonts simultaneously (I.e. "rpm -e ghostscript ghostscript-fonts"). Or use --nodeps as you have ...