Remove grammar for Racket

.gitmodules

@@ -112,9 +112,6 @@
 [submodule "vendor/grammars/nesC.tmbundle"]
 	path = vendor/grammars/nesC.tmbundle
 	url = https://github.com/cdwilson/nesC.tmbundle
-[submodule "vendor/grammars/racket-tmbundle"]
-	path = vendor/grammars/racket-tmbundle
-	url = https://github.com/christophevg/racket-tmbundle
 [submodule "vendor/grammars/haxe-sublime-bundle"]
 	path = vendor/grammars/haxe-sublime-bundle
 	url = https://github.com/clemos/haxe-sublime-bundle

grammars.yml

@@ -362,8 +362,6 @@ vendor/grammars/python-django.tmbundle:
 vendor/grammars/r.tmbundle:
 - source.r
 - text.tex.latex.rd
-vendor/grammars/racket-tmbundle:
-- source.racket
 vendor/grammars/restructuredtext.tmbundle:
 - text.restructuredtext
 vendor/grammars/ruby-haml.tmbundle:

lib/linguist/languages.yml

@@ -2475,7 +2475,7 @@ Racket:
   - .rktd
   - .rktl
   - .scrbl
-  tm_scope: source.racket
+  tm_scope: none
   ace_mode: lisp
 
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