[patch] ssh_config: remove mention of obsolete option Protocol

[Samy Mahmoudi]

Hi all,

The option Protocol is now obsolete.

The value of Protocol in ssh_config has indeed been changed from 2,1 to 2
but that option was deleted thereafter, when support of SSH protocol
version 1 was eventually dropped. No functional change (obsolete option was
mentioned in a comment)

References:
•
https://github.com/openssh/openssh-portable/commit/09d87d79741beb85768b5e788d7dfdf4bc3543dc#diff-f208e23062381f5c3f9230ebbbebb1a4
•
https://github.com/openssh/openssh-portable/commit/99f95ba82673d33215dce17bfa1512b57f54ec09#diff-42833d59dac20f1a0417b3ada07e9bf6

Please have a look at
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235466 for initial
problem report and modest patch.

Best regards,
Samy Mahmoudi