Remove useless nullable directives

Emby.Server.Implementations/Updates/InstallationManager.cs

@@ -1,7 +1,3 @@
-#nullable disable
-
-#nullable enable
-
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;

MediaBrowser.Controller/Drawing/IImageEncoder.cs

@@ -1,7 +1,4 @@
-#nullable disable
-
 #pragma warning disable CS1591
-#nullable enable
 
 using System;
 using System.Collections.Generic;

MediaBrowser.Controller/Drawing/IImageProcessor.cs

@@ -1,7 +1,4 @@
-#nullable disable
-
 #pragma warning disable CS1591
-#nullable enable
 
 using System;
 using System.Collections.Generic;

MediaBrowser.Controller/Drawing/ImageHelper.cs

@@ -1,7 +1,4 @@
-#nullable disable
-
 #pragma warning disable CS1591
-#nullable enable
 
 using MediaBrowser.Model.Drawing;
 

MediaBrowser.Controller/Entities/BaseItemExtensions.cs

@@ -1,6 +1,3 @@
-#nullable disable
-
-#nullable enable
 #pragma warning disable CS1591
 
 using System;

MediaBrowser.Controller/LiveTv/TimerEventInfo.cs

@@ -1,6 +1,3 @@
-#nullable disable
-
-#nullable enable
 #pragma warning disable CS1591
 
 using System;

MediaBrowser.Controller/Net/IWebSocketConnection.cs

@@ -1,9 +1,5 @@
-#nullable disable
-
 #pragma warning disable CS1591
 
-#nullable enable
-
 using System;
 using System.Net;
 using System.Net.WebSockets;

MediaBrowser.Model/Configuration/PathSubstitution.cs

@@ -1,5 +1,3 @@
-#nullable enable
-
 namespace MediaBrowser.Model.Configuration
 {
     /// <summary>

MediaBrowser.Model/MediaInfo/SubtitleTrackInfo.cs

@@ -1,4 +1,3 @@
-#nullable enable
 #pragma warning disable CS1591
 
 using System;

MediaBrowser.Model/Plugins/PluginInfo.cs

@@ -1,5 +1,3 @@
-#nullable enable
-
 using System;
 
 namespace MediaBrowser.Model.Plugins

MediaBrowser.Model/Plugins/PluginPageInfo.cs

@@ -1,5 +1,3 @@
-#nullable enable
-
 namespace MediaBrowser.Model.Plugins
 {
     /// <summary>

MediaBrowser.Model/Updates/VersionInfo.cs

@@ -1,5 +1,3 @@
-#nullable enable
-
 using System.Text.Json.Serialization;
 using SysVersion = System.Version;