sqlite: Remove obsolete note about the connect setting value

Author: sirainen

docs/core/config/sql/sqlite.md

@@ -11,15 +11,6 @@ Driver name is `sqlite`.
 
 To compile support for this driver. you need sqlite library and headers.
 
-::: tip [[changed,sqlite_filename]]
-Prior to v2.3.18, Dovecot uses the whole value as filename to connect,
-whitespace included.
-
-This was changed to support options, so it will use the first encountered
-parameter that has no `=` as filename. Whitespace cannot be used in
-filename.
-:::
-
 ## Settings
 
 <SettingsComponent tag="sql-sqlite" />