Revert "[ server ] Changed default mode as socket mode."

This reverts commit eb95434.

src/Server.hs

@@ -33,15 +33,7 @@ run devMode = do
         _      <- runServerWithHandles handle handle (serverDefn env)
         putStrLn "== dev server closed =="
     else do
-      -- runServer (serverDefn env)
-      let port = "3000"
-      putStrLn "== GCL backend program started =="
-      _ <- forkIO (printLog env)
-      serve (Host "127.0.0.1") port $ \(sock, _remoteAddr) -> do
-        putStrLn $ "== GCL language server established at port:" ++ port ++ " =="
-        handle <- socketToHandle sock ReadWriteMode
-        _      <- runServerWithHandles handle handle (serverDefn env)
-        putStrLn "== GCL language server closed =="
+      runServer (serverDefn env)
  where
   printLog :: GlobalEnv -> IO ()
   printLog env = forever $ do