台風通り過ぎたので revert します

@mamebro/owners 
台風通り過ぎたので注意喚起けします。

Revert "Merge pull request #222 from mamebro/warning-typhoon"

This reverts commit 8318747c3f39f49b6126f8c77c2caf78b1abec31, reversing
changes made to fb0c6922af8a47bb79beae088822c7310da92b35.