mssql: duplicate key in SQLDate convert formats
mssql: duplicate key in SQLDate convert formats

"y/m/d" key was defined both as 102 (ANSI) and 111 (Japan) (see #307).

Updating the array to match documentation for ANSI, i.e. "y.m.d" [[1]].

Fixes #748

[1]: https://docs.microsoft.com/en-us/sql/t-sql/functions/cast-and-convert-transact-sql

ipso/ADOdb,ipso/ADOdb