Remove packages that look unmaintained and fail to compile
These are all fairly low risk because they haven't compiled
for a while. A small number seem maintained in a fork and
have a hex.pm entry that is maintained. The others are likely
not used by anyone or only by users stuck on very old Erlang
versions.
-pkg_merge_index_description = MergeIndex is an Erlang library for storing ordered sets on disk. It is very similar to an SSTable (in Google's Bigtable) or an HFile (in Hadoop).
-pkg_statebox_riak_description = Convenience library that makes it easier to use statebox with riak, extracted from best practices in our production code at Mochi Media.
-pkg_surrogate_description = Proxy server written in erlang. Supports reverse proxy load balancing and forward proxy with http (including CONNECT), socks4, socks5, and transparent proxy modes.