Revert "Added experimental async event handlers"

This reverts commit 7237c6b3bf.

test/Discord.Net.Tests/Tests.cs

@@ -9,7 +9,7 @@ namespace Discord.Tests
 {
 	//TODO: Tests are massively incomplete and out of date, needing a full rewrite
 
-	/*[TestClass]
+	[TestClass]
 	public class Tests
 	{
 		private const int EventTimeout = 5000; //Max time in milliseconds to wait for an event response from our test actions
@@ -167,5 +167,5 @@ namespace Discord.Tests
 		{
 			Task.WaitAll(tasks.Where(x => x != null).SelectMany(x => x).ToArray());
 		}
-	}*/
+	}
 }