[aur-general] delete request: pysnmp-mibs

pysnmp-mibs[1] was out of date and incorrectly named. I have created python-pysnmp-mibs[2] and python2-pysnmp-mibs[3]. The latter replaces=('pysnmp-mibs') as the original was for python2. [1] https://aur.archlinux.org/packages.php?ID=33044 [2] https://aur.archlinux.org/packages.php?ID=56613 [3] https://aur.archlinux.org/packages.php?ID=56611