remove broken callout rule

.github/vale/Docker/Callouts.yml

@@ -1,15 +0,0 @@
-# Checks that a callout block is followed by a liquid tag
-# (Doesn't actually check that there is a well-formed liquid
-# tag, just checks that it is not an empty line.)
-extends: existence
-message: "Use a liquid tag for 'Important' or 'Warning' callouts."
-link: https://docs.docker.com/contribute/components/call-outs/
-level: warning
-nonword: true
-scope: raw
-raw:
-  - '[:blank:]*\>.*?'
-  - "(?i)(?:important|warning|danger|caution)(?-i)"
-  - '.*\n'
-  - '(?:\s*\>.*?\n)+?'
-  - '\s*\n'