ODR Fixes

include/frnetlib/Listener.h

@@ -17,8 +17,6 @@ class Listener : public SocketDescriptor
             init_wsa();
         }
 
-        virtual ~Listener() = default;
-
         /*!
          * Listens to the given port for connections
          *

include/frnetlib/Socket.h

@@ -52,7 +52,6 @@ namespace fr
         };
 
         Socket();
-        virtual ~Socket() = default;
         Socket(Socket &&) =delete;
         Socket(const Socket &) =delete;
         void operator=(const Socket &) =delete;