Tasking: Remove duplicated enum

This enum is already defined in networkquery.h, so that's
a copy/paste mistake.

Amends 6c39e136fd

Change-Id: I41feb13c9adc06608e67ff672120e434b80a4386
Reviewed-by: hjk <hjk@qt.io>

src/libs/solutions/tasking/tcpsocket.h

@@ -21,8 +21,6 @@ namespace Tasking {
 // is independent on Qt::Network.
 // Possibly, it could be placed inside Qt::Network library, as a wrapper around QTcpSocket.
 
-enum class NetworkOperation { Get, Put, Post, Delete };
-
 class TASKING_EXPORT TcpSocket final : public QObject
 {
     Q_OBJECT