Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilDatabaseQueryBuilder.cs
===================================================================
diff -u -rce31448a066c084f755439f3e7d453bfb042b291 -r7f759fbabca9c41e75d229269f1b21581b373b5f
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilDatabaseQueryBuilder.cs	(.../SoilDatabaseQueryBuilder.cs)	(revision ce31448a066c084f755439f3e7d453bfb042b291)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Builders/SoilDatabaseQueryBuilder.cs	(.../SoilDatabaseQueryBuilder.cs)	(revision 7f759fbabca9c41e75d229269f1b21581b373b5f)
@@ -19,8 +19,6 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using System;
-
 using Ringtoets.Piping.IO.SoilProfile;
 
 namespace Ringtoets.Piping.IO.Builders