remove unused alias for now.

dotfiles/gitconfig

@@ -40,7 +40,6 @@
         # Diff a file or show it in git's pager if it is untracked
         du = "!d() { git ls-files $1 --error-unmatch 2>/dev/null 1>/dev/null && git diff $1 || `git config --get core.pager` $1; }; d"
         clean-branches = "!r() { git branch -r --merged ${1-origin/master} | xargs -n1 git branch -d; }; r"
-	rmremotetag = "!rm() { git push $1 :refs/heads/tags/$2; } rm"
 
 [core]
 	# Use custom `.gitignore` and `.gitattributes`