Removed unnecessary using directives

Barotrauma/BarotraumaClient/Source/Utils/MathUtils.cs

@@ -1,8 +1,5 @@
 using Microsoft.Xna.Framework;
-using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
 
 namespace Barotrauma
 {

Barotrauma/BarotraumaClient/Source/Utils/SaveUtil.cs

@@ -1,7 +1,6 @@
 using System;
 using System.IO;
 using System.IO.Compression;
-using System.Text;
 using System.Xml.Linq;
 
 namespace Barotrauma

Barotrauma/BarotraumaClient/Source/Utils/TextureLoader.cs

@@ -1,7 +1,7 @@
-using System.IO;
-using Microsoft.Xna.Framework.Graphics;
-using Color = Microsoft.Xna.Framework.Color;
+using Microsoft.Xna.Framework.Graphics;
 using System;
+using System.IO;
+using Color = Microsoft.Xna.Framework.Color;
 
 namespace Barotrauma
 {

Barotrauma/BarotraumaClient/Source/Utils/ToolBox.cs

@@ -1,13 +1,6 @@
-using Lidgren.Network;
-using Microsoft.Xna.Framework;
-using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework;
 using System;
-using System.Globalization;
-using System.IO;
-using System.Linq;
 using System.Text;
-using System.Xml;
-using System.Xml.Linq;
 
 namespace Barotrauma
 {