add done: 20180222 3 reasons to say -no- in DevOps.md

sources/remove_DMCA.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+domain="$1"
+git checkout -b "$domain"
+git grep -l "$domain"|while read file; do git rm "$file"; done
+git commit -a -m "remove $domain"
+git push -u origin "$domain"
+git checkout master