[Tracking issue] Deprecations and inaccurate docs

[meowsbits]

There are several packages and/or tools housed in this repository that are, according to @holiman, unmaintained and now nonfunctional, which is rather a different picture than is presented on the README:

Note: All smoke tests must pass for a client to be included into hive.
https://github.com/ethereum/hive#smoke-testing-new-clients

... versus what I'm learning through some comments here and there:

I'm afraid I've never tested with the smoke tests... I only run the simulator consensus2
#189 (comment)

This is a tracking issue to organize discussion for what to do with the broken tests and documentation, and to serve as a PSA for newcomers attempting to use Hive.

As far as I can see, these tests and/or clients should be either removed (both from code and docs), or fixed. At this point it seems the former
may be more reasonable, but curious for feedback from the maintainers.

• Promote hive to be the standard Ethereum compatibility checker #1: Promote hive to be the standard Ethereum compatibility checker
• Error during running hive --client=go-ethereum:develop --test=NONE --sim=. #21: Error during running hive --client=go-ethereum:develop --test=NONE --sim=.
• Failed to simulate clients saying the system has go1.11 while go-ethereum requires >go1.4 #127: Failed to simulate clients saying the system has go1.11 while go-ethereum requires >go1.4
• Hive broken if not using docker-noshell #171: Hive broken if not using docker-noshell
• --sim=devp2p.* --client=go-eth.* : panic: runtime error: invalid memory address or nil pointer dereference #177: --sim=devp2p.* --client=go-eth.* : panic: runtime error: invalid memory address or nil pointer dereference
• --client='go.*master' --sim='.*issues.*' : failed to lookup bridge IP #184: --client='go.*master' --sim='.issues.' : failed to lookup bridge IP
• --client='go.*master' --sim='.*ethereum.*' : go-ethereum requires at least Go version 1.4 and cannot be compiled with an earlier version #185: --client='go.*master' --sim='.ethereum.' : go-ethereum requires at least Go version 1.4 and cannot be compiled with an earlier version
• --client='go.*stable' --smoke: program stalls #186: --client='go.*stable' --smoke: program stalls
• --client='parity.*beta' --smoke: cargo not found (The location of rustup.sh has moved.) #188: --client='parity.*beta' --smoke: cargo not found (The location of rustup.sh has moved.)
• --client='parity.*stable' : Failed to identify the stable branch. #189: --client='parity.*stable' : Failed to identify the stable branch.
• Hive installation fails #190: Hive installation fails