QFontDatabase: Delete redundant semicolons

There are too many semicolons. Delete some.

Fixes two warnings from Clang 9.0.1.

Change-Id: I363a6a2de9c075c03da62c58ad46828c04a95440
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

src/gui/text/qfontengine_p.h

@@ -136,7 +136,7 @@ public:
         signed char format = 0;
         uchar *data = nullptr;
     private:
-        Q_DISABLE_COPY(Glyph);
+        Q_DISABLE_COPY(Glyph)
     };
 
     virtual ~QFontEngine();

src/gui/text/qtextengine_p.h

@@ -351,7 +351,7 @@ struct QScriptItem
     Q_DECL_CONSTEXPR QFixed height() const noexcept { return ascent + descent; }
 private:
     friend class QVector<QScriptItem>;
-    QScriptItem() {}; // for QVector, don't use
+    QScriptItem() {} // for QVector, don't use
 };
 Q_DECLARE_TYPEINFO(QScriptItem, Q_PRIMITIVE_TYPE);