Remove all last remnants of Neon Alley integration

I grepped the codebase for "neon" and attempted to tear out everything related to the old neon alley integration.  This should be pretty much everything.

Large portions were commented out or in files which don't seem to be used anymore, but I removed it anyways because it's basically 5 keystrokes in vim.

Also I *hope* I didn't cause the recommendations worker to explode (it shouldn't in theory, but that thing is a pile of spaghetti)