DebuggerAspect: Simplify handling of Qml debugging

There should not be a need to have the linkQmlDebuggingLibrary Q_PROPERTY
anymore. The property is added for the benefit of the DebuggerAspect, which
can just check relevant BuildConfigurationAspect directly.

Change-Id: Ic47ca9e26911e096564fe77bd14bebe959b4f116
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.cpp

@@ -195,12 +195,6 @@ bool CMakeBuildConfiguration::fromMap(const QVariantMap &map)
     return true;
 }
 
-
-
-
-
-
-
 FilePath CMakeBuildConfiguration::shadowBuildDirectory(const FilePath &projectFilePath,
                                                        const Kit *k,
                                                        const QString &bcName,
@@ -382,12 +376,6 @@ void CMakeBuildConfiguration::setWarning(const QString &message)
     emit warningOccured(m_warning);
 }
 
-bool CMakeBuildConfiguration::isQmlDebuggingEnabled() const
-{
-    return aspect<QtSupport::QmlDebuggingAspect>()->setting() == TriState::Enabled;
-}
-
-
 QString CMakeBuildConfiguration::error() const
 {
     return m_error;