sslutil: remove "strict" argument from validatesocket()
It was only used by mail.py as part of processing smtp.verifycert,
which was just removed.
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true