Remove redundant code (for Node.js 0.9.4 and below) and dependency

[ChALkeR]

PR Checklist:

• I have run npm test locally and all tests are passing.
• I have added/updated tests for any new behavior.
  
• If this is a significant change, an issue has already been created where the problem / solution was discussed: [N/A, or add link to issue here]
  

PR Description

That code was needed for Node.js 0.9.4 and below, which is not supported anymore.

The tests don't pass, but the exact same tests that fail were already failing on master prior to this change.

/cc @mikeal

[jeradg]

May I ask what the status of this PR is? The Hackerone report of stringstream's vulnerability was disclosed today (https://hackerone.com/reports/321670). I'd love to get a patched version so Snyk will stop complaining!

[ChALkeR]

/cc @simov, perhaps?

[simov]

I wanted to make tests green again, first. There was an effort on that front, if you merge master you'll see something like this https://travis-ci.org/request/request/builds/373888724

Besides the warning messages, there is an error with the certificates on node v10:

Error: error:140AB18F:SSL routines:SSL_CTX_use_certificate:ee key too small

I've tried generating new certificates numerous times with various options, but it never stopped complaining. @ChALkeR can you help me with that?

[ChALkeR]

@simov E.g. this works for me in the tests/ssl/ca dir:

openssl genrsa 4096 > server.key
openssl req -new -sha256 -key server.key -config server.cnf -out server.csr
openssl x509 -req -sha256 -in server.csr -CA ca.crt -CAkey ca.key -out server.crt

Not sure what exactly do you want to test, so better verify that it does what you want it to do.

Your ca.key password seems to be password, you will have to type that in.

[ChALkeR]

Hope that helps! I also rebased this PR against current master.

[ChALkeR]

🎉

[ChALkeR]

For posterity, the only commit in this PR was 81f8cb5, all the other changes were introduced while landing and come from #2942, not sure how they ended up here.

[simov]

It's my fault.