Convert to Qt6 compatible code

src/kalarmcalendar/alarmtext.cpp

@@ -10,7 +10,6 @@
 
 #include "alarmtext.h"
 
-
 #include <KLocalizedString>
 
 #include <QStringList>

src/resources/fileresourceconfigmanager.cpp

@@ -63,11 +63,7 @@ void FileResourceConfigManager::createResources(QObject* parent)
         std::sort(resourceGroups.begin(), resourceGroups.end(),
                   [](const QString& g1, const QString& g2)
                   {
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-                      return g1.midRef(9).toInt() < g2.midRef(9).toInt();
-#else
                       return QStringView(g1).mid(9).toInt() < QStringView(g2).mid(9).toInt();
-#endif
                   });
 
         KConfigGroup general(manager->mConfig, GROUP_GENERAL);
@@ -75,11 +71,7 @@ void FileResourceConfigManager::createResources(QObject* parent)
 
         for (const QString& resourceGroup : std::as_const(resourceGroups))
         {
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-            const int groupIndex = resourceGroup.midRef(9).toInt();
-#else
             const int groupIndex = QStringView(resourceGroup).mid(9).toInt();
-#endif
             FileResourceSettings::Ptr settings(new FileResourceSettings(manager->mConfig, resourceGroup));
             if (!settings->isValid())
             {