[server] C++ 11 style default virtual destructor

Author: elpaso

src/server/qgsserverinterface.cpp

@@ -23,8 +23,3 @@ QgsServerInterface::QgsServerInterface():
     mConfigFilePath( QString() )
 {
 }
-
-
-QgsServerInterface::~QgsServerInterface()
-{
-}

src/server/qgsserverinterface.h

@@ -57,7 +57,7 @@ class SERVER_EXPORT QgsServerInterface
     //! Constructor
     QgsServerInterface();
 
-    virtual ~QgsServerInterface() = 0;
+    virtual ~QgsServerInterface() = default;
 
     /**
      * Set the request handler