remove unnecessary connection upgrade check

Signed-off-by: Lachlan Roberts <lachlan@webtide.com>

jetty-server/src/main/java/org/eclipse/jetty/server/HttpConnection.java

@@ -257,11 +257,6 @@ public class HttpConnection extends AbstractConnection implements Runnable, Http
                 // Parse the request buffer.
                 boolean handle = parseRequestBuffer();
 
-                // If there was a connection upgrade, the other
-                // connection took over, nothing more to do here.
-                if (getEndPoint().getConnection() != this)
-                    break;
-
                 // Handle channel event
                 if (handle)
                 {