Remove unneeded version check

This was not cleaned up when the KF5_MIN_VERSION was bumped

src/ktouchcontext.cpp

@@ -134,11 +134,7 @@ void KTouchContext::showConfigDialog()
 
 void KTouchContext::configureShortcuts()
 {
-#if KXMLGUI_VERSION >= QT_VERSION_CHECK(5, 84, 0)
     KShortcutsDialog::showDialog(m_actionCollection, KShortcutsEditor::LetterShortcutsDisallowed, m_mainWindow);
-#else
-    KShortcutsDialog::configure(m_actionCollection, KShortcutsEditor::LetterShortcutsDisallowed, m_mainWindow);
-#endif
 }
 
 void KTouchContext::showKeyboardKCM()