Removed MarkNLogNamespaceAsExternal and applied default in SentryOptions

Based on Serilog's doing so as well.

Author: Josh DeGraw

src/Sentry.NLog/SentryNLogOptions.cs

@@ -17,11 +17,6 @@ namespace Sentry.NLog
     [NLogConfigurationItem]
     public class SentryNLogOptions : SentryOptions
     {
-        /// <summary>
-        /// If set to <see langword="true" />, marks namespaces beginning with NLog as external code. Defaults
-        /// to <see langword="true" />.
-        /// </summary>
-        public bool MarkNLogNamespaceAsExternal { get; set; } = true;
 
         /// <summary>
         /// How many seconds to wait after triggering Logmanager.Shutdown() before just shutting down the

src/Sentry.NLog/SentryTarget.cs

@@ -108,11 +108,6 @@ protected override void InitializeTarget()
 
             IncludeEventProperties = Options.SendEventPropertiesAsData;
 
-            if (Options.MarkNLogNamespaceAsExternal)
-            {
-                Options.AddInAppExclude("NLog");
-            }
-
             // If the sdk is not there, set it on up.
             if (Options.InitializeSdk && _sdkDisposable == null)
             {

src/Sentry/SentryOptions.cs

@@ -369,7 +369,8 @@ public SentryOptions()
                     "Newtonsoft.Json",
                     "FSharp.",
                     "Serilog",
-                    "Giraffe.");
+                    "Giraffe.",
+                    "NLog");
 
             InAppInclude = ImmutableList<string>.Empty;
         }