Remove superfluous destructor from QWebEngineCookieStorePrivate

Change-Id: I449f4c19b256373b78fa4585c14d06dbc8bc7276
Reviewed-by: Michal Klocek <michal.klocek@theqtcompany.com>
Reviewed-by: Michael Brüning <michael.bruning@theqtcompany.com>

src/core/api/qwebenginecookiestore.cpp

@@ -56,11 +56,6 @@ QWebEngineCookieStorePrivate::QWebEngineCookieStorePrivate(QWebEngineCookieStore
 {
 }
 
-QWebEngineCookieStorePrivate::~QWebEngineCookieStorePrivate()
-{
-
-}
-
 void QWebEngineCookieStorePrivate::processPendingUserCookies()
 {
     Q_ASSERT(delegate);

src/core/api/qwebenginecookiestore_p.h

@@ -84,7 +84,6 @@ public:
     QWebEngineCookieStore *q_ptr;
 
     QWebEngineCookieStorePrivate(QWebEngineCookieStore *q);
-    ~QWebEngineCookieStorePrivate();
 
     void processPendingUserCookies();
     void setCookie(const QWebEngineCallback<bool> &callback, const QNetworkCookie &cookie, const QUrl &origin);