Remove version warning in SQL Server

Remove version warning in SQL Server

Remove warning for SQL Server dialect when a new version is detected.
The warning was originally added more than 15 years ago due to an unexpected
value returned when using an old version of FreeTDS.
The assumption is that since then the issue has been resolved, so make the
SQL Server dialect behave like the other ones that don't have an upper bound
check on the version number.

This effectively reverts 64d92c836ce029e33b57bcabd4ca76944549e022
that was added for #1825

Fixes: #13185
Change-Id: I79c6951b2fbb6da2caefca97dc3e1b9d8f48f0ab
(cherry picked from commit f5e4c2bcaa27cf1e1e73e5fc8d4ca19180954ae8)