Debugger: Remove unused DebuggerEngine::isSynchronous

Change-Id: Ia1eb3a65fabbf966a1766d68456144fd9e093ae8
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/debugger/qml/qmlcppengine.cpp

@@ -207,11 +207,6 @@ bool QmlCppEngine::hasCapability(unsigned cap) const
     return hasCap;
 }
 
-bool QmlCppEngine::isSynchronous() const
-{
-    return m_activeEngine->isSynchronous();
-}
-
 QString QmlCppEngine::qtNamespace() const
 {
     return m_cppEngine->qtNamespace();

src/plugins/debugger/qml/qmlcppengine.h

@@ -65,7 +65,6 @@ public:
     void setRegisterValue(const QString &name, const QString &value) override;
     bool hasCapability(unsigned cap) const override;
 
-    bool isSynchronous() const override;
     QString qtNamespace() const override;
 
     void createSnapshot() override;

src/plugins/debugger/qml/qmlengine.h

@@ -70,7 +70,6 @@ private:
     void gotoLocation(const Internal::Location &location) override;
     void insertBreakpoint(Breakpoint bp) override;
 
-    bool isSynchronous() const override { return false; }
     bool canDisplayTooltip() const override { return false; }
 
     void resetLocation() override;