QNX: Fix debugging on QNX >6.5

The previous approach when debugging on pure QNX 6.5
no longer works with QNX version >6.5. Use proper way with
"set nto-executable" and "run" instead.

Change-Id: I00961236b416c42a0c81e29ea087de5ddd3a5f00
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/debugger/debuggerengine.cpp

@@ -122,7 +122,6 @@ QDebug operator<<(QDebug str, const DebuggerStartParameters &sp)
             << " attachPID=" << sp.attachPID
             << " useTerminal=" << sp.useTerminal
             << " remoteChannel=" << sp.remoteChannel
-            << " symbolFileName=" << sp.symbolFileName
             << " serverStartScript=" << sp.serverStartScript
             << " abi=" << sp.toolChainAbi.toString() << '\n';
     return str;