debugger: remove unneeded SourceAgent inheritance from QObject

Change-Id: I4367f9ed8198abfc8a6afacbfbf8df5a777a4bf6
Reviewed-by: Robert Löhning <robert.loehning@nokia.com>
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/sourceagent.cpp

@@ -107,7 +107,7 @@ SourceAgentPrivate::~SourceAgentPrivate()
 }
 
 SourceAgent::SourceAgent(DebuggerEngine *engine)
-    : QObject(0), d(new SourceAgentPrivate)
+    : d(new SourceAgentPrivate)
 {
     d->engine = engine;
 }

src/plugins/debugger/sourceagent.h

@@ -33,7 +33,7 @@
 #ifndef DEBUGGER_SOURCE_AGENT_H
 #define DEBUGGER_SOURCE_AGENT_H
 
-#include <QObject>
+#include <QString>
 
 namespace Debugger {
 
@@ -42,7 +42,7 @@ class DebuggerEngine;
 namespace Internal {
 
 class SourceAgentPrivate;
-class SourceAgent : public QObject
+class SourceAgent
 {
 public:
     explicit SourceAgent(Debugger::DebuggerEngine *engine);