Drop Application::setupTranslator()

KI18n already does the same for us in its Q_COREAPP_STARTUP_FUNCTION
hook and setupTranslator() produces a compiler warning.

src/main.cpp

@@ -43,12 +43,9 @@
 #include <KLocalizedString>
 // Qt
 #include <QCommandLineParser>
-#include <QLibraryInfo>
 #include <QQuickWindow>
-#include <QStandardPaths>
-#include <QTranslator>
-#include <qplatformdefs.h>
 #include <private/qtx11extras_p.h>
+#include <qplatformdefs.h>
 
 #include <cerrno>
 
@@ -210,14 +207,6 @@ void Application::processCommandLine(QCommandLineParser *parser)
     Application::setCrashCount(parser->value(s_crashesOption).toInt());
 }
 
-void Application::setupTranslator()
-{
-    QTranslator *qtTranslator = new QTranslator(qApp);
-    qtTranslator->load("qt_" + QLocale::system().name(),
-                       QLibraryInfo::location(QLibraryInfo::TranslationsPath));
-    installTranslator(qtTranslator);
-}
-
 void Application::setupMalloc()
 {
 #ifdef M_TRIM_THRESHOLD

src/main.h

@@ -124,7 +124,6 @@ public:
     void setOperationMode(OperationMode mode);
     bool shouldUseWaylandForCompositing() const;
 
-    void setupTranslator();
     void setupCommandLine(QCommandLineParser *parser);
     void processCommandLine(QCommandLineParser *parser);
 

src/main_wayland.cpp

@@ -282,7 +282,7 @@ int main(int argc, char *argv[])
     qunsetenv("QT_DEVICE_PIXEL_RATIO");
     qputenv("QSG_RENDER_LOOP", "basic");
     KWin::ApplicationWayland a(argc, argv);
-    a.setupTranslator();
+
     // reset QT_QPA_PLATFORM so we don't propagate it to our children (e.g. apps launched from the overview effect)
     qunsetenv("QT_QPA_PLATFORM");
 

src/main_x11.cpp

@@ -396,7 +396,6 @@ int main(int argc, char *argv[])
     QSurfaceFormat::setDefaultFormat(format);
 
     KWin::ApplicationX11 a(argc, argv);
-    a.setupTranslator();
 
     // reset QT_QPA_PLATFORM so we don't propagate it to our children (e.g. apps launched from the overview effect)
     qunsetenv("QT_QPA_PLATFORM");