Remove .github/move.yml. (#129409)

The file is not being used.

Bug: https://github.com/flutter/flutter/issues/129404

.github/move.yml

-# Configuration for move-issues - https://github.com/dessant/move-issues
-
-# Delete the command comment when it contains no other content.
-deleteCommand: true
-
-# Close the source issue after moving.
-closeSourceIssue: true
-
-# Lock the source issue after moving.
-lockSourceIssue: false
-
-# Mention issue and comment authors.
-mentionAuthors: true
-
-# Preserve mentions in the issue content.
-keepContentMentions: true
-
-# Set custom aliases for targets
-aliases:
-  ide: flutter-intellij