The license for the mpir package has been simplified from “LGPLv3+ and LGPLv2+ and (LGPLv3+ or GPLv2+) and BSD” back to the effective license of “LGPLv3+”.
See also https://fedoraproject.org/wiki/Licensing:FAQ#What_is_.22effective_license.22.... While not strictly required when there is a single effective license, a breakdown of the exact licenses for various source files is still included.