Remove OpenSSL<1.1.0 ssl_sock_ossl.c

[r-barnes]

I can't imagine this version of SSL is secure any more or that this code is getting well-tested. Let's remove it and focus on the modern forms of the library.

[CLAassistant]

All committers have signed the CLA.

[sauwming]

Unfortunately, some of our customers still report using 1.0.2