fix gitextensions#1871. Remove Splash screen at all

GitExtensions/Program.cs

@@ -54,27 +54,22 @@ private static void Main()
             }
 
             string[] args = Environment.GetCommandLineArgs();
-            FormSplash.ShowSplash();
-            //Store here SynchronizationContext.Current, because later sometimes it can be null
-            //see http://stackoverflow.com/questions/11621372/synchronizationcontext-current-is-null-in-continuation-on-the-main-ui-thread
-            GitUIExtensions.UISynchronizationContext = SynchronizationContext.Current;
-            AsyncLoader.DefaultContinuationTaskScheduler = TaskScheduler.FromCurrentSynchronizationContext();
-            Application.DoEvents();
+
+            //This form created for obtain UI synchronization context only
+            using (var empFormForSyncContext = new Form())
+            {
+                //Store here SynchronizationContext.Current, because later sometimes it can be null
+                //see http://stackoverflow.com/questions/11621372/synchronizationcontext-current-is-null-in-continuation-on-the-main-ui-thread
+                GitUIExtensions.UISynchronizationContext = SynchronizationContext.Current;
+                AsyncLoader.DefaultContinuationTaskScheduler = TaskScheduler.FromCurrentSynchronizationContext();
+            }
 
             AppSettings.LoadSettings();
             if (EnvUtils.RunningOnWindows())
             {
-              WebBrowserEmulationMode.SetBrowserFeatureControl();
-
-              //Quick HOME check:
-                FormSplash.SetAction("Checking home path...");
-                Application.DoEvents();
-
+                WebBrowserEmulationMode.SetBrowserFeatureControl();
                 FormFixHome.CheckHomePath();
             }
-            //Register plugins
-            FormSplash.SetAction("Loading plugins...");
-            Application.DoEvents();
 
             if (string.IsNullOrEmpty(AppSettings.Translation))
             {
@@ -91,9 +86,6 @@ private static void Main()
                     || string.IsNullOrEmpty(AppSettings.GitCommandValue)
                     || !File.Exists(AppSettings.GitCommandValue)))
                 {
-                    FormSplash.SetAction("Checking settings...");
-                    Application.DoEvents();
-
                     GitUICommands uiCommands = new GitUICommands(string.Empty);
                     var commonLogic = new CommonLogic(uiCommands.Module);
                     var checkSettingsLogic = new CheckSettingsLogic(commonLogic);
@@ -115,8 +107,6 @@ private static void Main()
                 // TODO: remove catch-all
             }
 
-            FormSplash.HideSplash();
-
             if (EnvUtils.RunningOnWindows())
                 MouseWheelRedirector.Active = true;