Fix errors that appear when compiling with -pedantic-errors flag. (#183)

Extra unnecessary semicolons removed.

Author: TheQuantumPhysicist

includes/cpp_redis/core/sentinel.hpp

@@ -344,4 +344,4 @@ class sentinel {
   std::atomic<unsigned int> m_callbacks_running;
 };
 
-}; // namespace cpp_redis
+} // namespace cpp_redis

includes/cpp_redis/impl/client.ipp

@@ -67,13 +67,13 @@ client::client_kill_impl(std::vector<std::string>& redis_cmd, reply_callback_t&
   static_assert(!std::is_class<T>::value, "Reply callback should be in the end of the argument list");
   client_kill_unpack_arg<T>(redis_cmd, reply, arg);
   client_kill_impl(redis_cmd, reply, args...);
-};
+}
 
 template <typename T>
 void
 client::client_kill_impl(std::vector<std::string>& redis_cmd, reply_callback_t& reply, const T& arg) {
   client_kill_unpack_arg<T>(redis_cmd, reply, arg);
-};
+}
 
 template <typename T, typename... Ts>
 inline client&