Remove release note on #719 which was rolled back

Author: roji

doc/release-notes/2.2.md

@@ -39,10 +39,6 @@ This will make the provider create a PostgreSQL range called `floatrange`, over
 
 [See the documentation for more details](../mapping/range.md).
 
-### Type-constrained PostGIS columns
-
-The NetTopologySuite previously created PostGIS columns of type `GEOMETRY` (or `GEOGRAPHY`) in the database. With [#719](https://github.com/npgsql/Npgsql.EntityFrameworkCore.PostgreSQL/issues/719), a property of type `Point` will be instead mapped to columns of type `GEOMETRY (POINT)`.
-
 ### Seeding for Npgsql-specific types
 
 When using some Npgsql-specific types, it wasn't possible to seed values for those types. With EF Core support for seeding any type, [#667](https://github.com/npgsql/Npgsql.EntityFrameworkCore.PostgreSQL/issues/667) allows seeding values for network, bit and range types (more are coming).