feat: rebuild the interface after Haruna

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/mpv/mpvitem.h

@@ -102,8 +102,6 @@ public:
     // Makes \a url the only subtitle shown, adding it first (named \a title) unless it is
     // already loaded.
     Q_INVOKABLE void showTranslatedSubtitleFile(const QUrl &url, const QString &title);
-    // Shows a short message on mpv's on-screen display.
-    Q_INVOKABLE void showText(const QString &text);
 
 Q_SIGNALS:
     void currentUrlChanged();