dispatcher: minor changes

src/entt/signal/dispatcher.hpp

@@ -190,7 +190,6 @@ public:
      */
     basic_dispatcher &operator=(basic_dispatcher &&other) noexcept {
         ENTT_ASSERT(alloc_traits::is_always_equal::value || pools.second() == other.pools.second(), "Copying a dispatcher is not allowed");
-
         pools = std::move(other.pools);
         return *this;
     }