Remove ext blocking from gitignore (cdnjs#14005)

Author: MattIPv4

.gitignore

@@ -293,43 +293,3 @@ node_modules/
 #ignore files that we don't need
 /ajax/libs/*/*/**/Gruntfile.js
 /ajax/libs/*/*/**/.gitignore
-
-#ignore files that we don't support
-/ajax/libs/*/*/**/*.styl
-/ajax/libs/*/*/**/*.scss
-/ajax/libs/*/*/**/*.mustache
-/ajax/libs/*/*/**/*.txt
-/ajax/libs/*/*/**/*.coffee
-/ajax/libs/*/*/**/*.ico
-/ajax/libs/*/*/**/*.psd
-/ajax/libs/*/*/**/*.html
-/ajax/libs/*/*/**/*.amd
-/ajax/libs/*/*/**/*.zip
-/ajax/libs/*/*/**/*.gz
-/ajax/libs/*/*/**/*.br
-/ajax/libs/*/*/**/*.rb
-/ajax/libs/*/*/**/*.xap
-/ajax/libs/*/*/**/*.tmSnippet
-/ajax/libs/*/*/**/*.plist
-/ajax/libs/*/*/**/*.handlebars
-/ajax/libs/*/*/**/*.gs
-/ajax/libs/*/*/**/*.php
-/ajax/libs/*/*/**/*.ls
-/ajax/libs/*/*/**/*.less
-/ajax/libs/*/*/**/*LICENSE
-/ajax/libs/*/*/**/*.LICENSE
-/ajax/libs/*/*/**/*.ai
-/ajax/libs/*/*/**/*.yml
-/ajax/libs/*/*/**/*.jade
-/ajax/libs/*/*/**/*.nupkg
-/ajax/libs/*/*/**/*.sublime-*
-/ajax/libs/*/*/**/*.md
-/ajax/libs/*/*/**/*.markdown
-/ajax/libs/*/*/**/*.sh
-/ajax/libs/*/*/**/*.flow
-/ajax/libs/*/*/**/*.git
-/ajax/libs/*/*/**/*.git-id
-/ajax/libs/*/*/**/custom
-/ajax/libs/*/*/**/README
-/ajax/libs/*/*/**/README.md
-/ajax/libs/*/*/**/README.markdown