fix duplicated logs

Author: huozhi

packages/next/src/server/app-render/create-error-handler.tsx

@@ -119,8 +119,6 @@ export function createErrorHandler({
         // This will trace error traces to the original source code.
         if (typeof __next_log_error__ === 'function') {
           __next_log_error__(err)
-        } else {
-          console.error(err)
         }
         onReactStreamRenderError?.(err)
       }