Remove warning about schema dumps and in-memory SQLite databases.

migrations.md

@@ -71,7 +71,7 @@ php artisan schema:dump --database=testing --prune
 You should commit your database schema file to source control so that other new developers on your team may quickly create your application's initial database structure.
 
 > [!WARNING]  
-> Migration squashing is only available for the MySQL, PostgreSQL, and SQLite databases and utilizes the database's command-line client. Schema dumps may not be restored to in-memory SQLite databases.
+> Migration squashing is only available for the MySQL, PostgreSQL, and SQLite databases and utilizes the database's command-line client.
 
 <a name="migration-structure"></a>
 ## Migration Structure