plasma: remove redundant PlasmaApp::hasComposite() methods

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

plasma/shells/plasma-desktop/panelview.cpp

@@ -1463,7 +1463,7 @@ void PanelView::appletAdded(Plasma::Applet *applet)
 
 bool PanelView::shouldHintHide() const
 {
-    return m_visibilityMode == AutoHide && PlasmaApp::hasComposite();
+    return m_visibilityMode == AutoHide && KWindowSystem::compositingActive();
 }
 
 void PanelView::recreateUnhideTrigger()

plasma/shells/plasma-desktop/plasmaapp.cpp

@@ -626,16 +626,6 @@ void PlasmaApp::wallpaperCheckedIn()
     }
 }
 
-bool PlasmaApp::hasComposite()
-{
-//    return true;
-#ifdef Q_WS_X11
-    return KWindowSystem::compositingActive();
-#else
-    return false;
-#endif
-}
-
 void PlasmaApp::suspendStartup(bool suspend)
 {
     org::kde::KSMServerInterface ksmserver("org.kde.ksmserver", "/KSMServer", QDBusConnection::sessionBus());

plasma/shells/plasma-desktop/plasmaapp.h

@@ -59,7 +59,6 @@ public:
     ~PlasmaApp();
 
     static PlasmaApp *self();
-    static bool hasComposite();
 
     void suspendStartup(bool completed);
     DesktopCorona *corona(bool createIfMissing = true);

plasma/shells/plasma-windowed/plasmaapp.cpp

@@ -217,12 +217,6 @@ Plasma::Corona* PlasmaApp::corona()
     return m_corona;
 }
 
-bool PlasmaApp::hasComposite()
-{
-    return KWindowSystem::compositingActive();
-}
-
-
 void PlasmaApp::storeApplet(Plasma::Applet *applet)
 {
     m_storedApplets.insert(applet->name(), applet->id());

plasma/shells/plasma-windowed/plasmaapp.h

@@ -52,11 +52,9 @@ public:
     int newInstance();
 
     static PlasmaApp* self();
-    static bool hasComposite();
 
     Plasma::Corona* corona();
 
-
 private:
     PlasmaApp();