Revert "Initial commit of pmacct module"

This reverts commit 2e7954be2d24fe2ed6d246ce0b30f8b24750a8fa. This
violates a bunch of our conventions and really needs to go via a proper
code review process. It's also a broken pmacct configuration (no
/opt/maxmind, among others).

More importantly, it's also a doubly broken ferm configuration that
would break all other netmon1001 services if it was otherwise
non-broken.

Change-Id: I1865d1f2c69302eca83e29eb09a17105d21590e1