Don't spam console with errors on unexpected disconnect. Addresses BUKKIT-693

src/main/java/net/minecraft/server/NetworkManager.java

@@ -173,7 +173,7 @@ public class NetworkManager {
     }
 
     private void a(Exception exception) {
-        exception.printStackTrace();
+        // exception.printStackTrace(); // CraftBukkit - Remove console spam
         this.a("disconnect.genericReason", new Object[] { "Internal exception: " + exception.toString()});
     }
 

src/main/java/net/minecraft/server/NetworkWriterThread.java

@@ -41,7 +41,7 @@ class NetworkWriterThread extends Thread {
                         NetworkManager.a(this.a, (Exception) ioexception);
                     }
 
-                    ioexception.printStackTrace();
+                    // ioexception.printStackTrace(); // CraftBukkit - Don't spam console on unexpected disconnect
                 }
 
                 try {