Remove extra runtime section with a binding redirect to old NUnit

Author: hazzik

src/NHibernate.Test/App.config

@@ -99,13 +99,4 @@
 	</log4net>
 
 <startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1"/></startup>
-	<runtime>
-		<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-			<dependentAssembly>
-				<assemblyIdentity name="nunit.framework" publicKeyToken="96d09a1eb7f44a77" culture="neutral"/>
-				<bindingRedirect oldVersion="0.0.0.0-2.6.1.12217" newVersion="2.6.1.12217"/>
-			</dependentAssembly>
-		</assemblyBinding>
-	</runtime>
-
 </configuration>