clean unused usings

Author: unitycoder

Diff for: UnityLauncherPro/App.xaml.cs

@@ -1,10 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Configuration;
-using System.Data;
-using System.Linq;
-using System.Threading.Tasks;
-using System.Windows;
+using System.Windows;
 
 namespace UnityLauncherPro
 {

Diff for: UnityLauncherPro/Data/ThemeColor.cs

@@ -1,5 +1,4 @@
 using System;
-using System.ComponentModel;
 using System.Globalization;
 using System.Windows.Data;
 using System.Windows.Media;

Diff for: UnityLauncherPro/UpgradeWindow.xaml.cs

@@ -1,6 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
+using System.Linq;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;