Reset maintainership of the ports maintained by alexey@renatasystems.org

Based on the timeout of 3+ months (2018-03-23-now) on bug#226885 for net/ucarp

Also, looking at the subversion log, there were timeouts on:

• bug#224169 r465659 | ygy | 2018-03-26 19:51:12
• bug#224768 r459066 | swills | 2018-01-15 07:16:28
• bug#224755 r459058 | swills | 2018-01-15 06:55:08

The last approval from alexey@renatasystems.org was over a year ago:
bug#218563 r438885 | lifanov | 2017-04-19 08:30:28 (devel/py-colorama)