Remove unnecessary usings.

Signed-off-by: Bradley Grainger <[email protected]>

src/MySqlConnector/Core/ServerSession.cs

@@ -7,7 +7,6 @@
 using System.Net.Security;
 using System.Net.Sockets;
 using System.Reflection;
-using System.Runtime.ConstrainedExecution;
 using System.Security.Authentication;
 using System.Security.Cryptography;
 using System.Security.Cryptography.X509Certificates;

src/MySqlConnector/Protocol/Serialization/ProtocolUtility.cs

@@ -1,6 +1,5 @@
 using System.Buffers;
 using MySqlConnector.Protocol.Payloads;
-using MySqlConnector.Utilities;
 
 namespace MySqlConnector.Protocol.Serialization;
 

tests/IntegrationTests/RedirectionTests.cs

@@ -1,5 +1,4 @@
 #if !MYSQL_DATA
-using System.Globalization;
 using System.Net;
 using System.Net.Sockets;