translations: throw away trivial dtors

they don't serve a purpose. the virtual model base has a virtual dtor so
by extension we also have a virtual implicit dtor (presumably)

kcms/translations/translationsmodel.cpp

@@ -161,10 +161,6 @@ TranslationsModel::TranslationsModel(QObject *parent)
     }
 }
 
-TranslationsModel::~TranslationsModel()
-{
-}
-
 QHash<int, QByteArray> TranslationsModel::roleNames() const
 {
     QHash<int, QByteArray> roles = QAbstractItemModel::roleNames();
@@ -236,10 +232,6 @@ SelectedTranslationsModel::SelectedTranslationsModel(QObject *parent)
 {
 }
 
-SelectedTranslationsModel::~SelectedTranslationsModel()
-{
-}
-
 QVariant SelectedTranslationsModel::data(const QModelIndex &index, int role) const
 {
     if (!index.isValid() || index.row() < 0 || index.row() >= m_selectedLanguages.count()) {
@@ -421,10 +413,6 @@ AvailableTranslationsModel::AvailableTranslationsModel(QObject *parent)
 {
 }
 
-AvailableTranslationsModel::~AvailableTranslationsModel()
-{
-}
-
 QVariant AvailableTranslationsModel::data(const QModelIndex &index, int role) const
 {
     if (!index.isValid() || index.row() < 0 || index.row() >= m_availableLanguages.count()) {

kcms/translations/translationsmodel.h

@@ -42,7 +42,6 @@ public:
     Q_ENUM(AdditionalRoles)
 
     explicit TranslationsModel(QObject *parent = nullptr);
-    ~TranslationsModel() override;
 
     QHash<int, QByteArray> roleNames() const override;
 
@@ -66,7 +65,6 @@ class SelectedTranslationsModel : public TranslationsModel
 
 public:
     explicit SelectedTranslationsModel(QObject *parent = nullptr);
-    ~SelectedTranslationsModel() override;
 
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
@@ -100,7 +98,6 @@ class AvailableTranslationsModel : public TranslationsModel
 
 public:
     explicit AvailableTranslationsModel(QObject *parent = nullptr);
-    ~AvailableTranslationsModel() override;
 
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;