Remove the Hy grammar (#3411)

The grammar repository was recently deleted

.gitmodules

@@ -443,9 +443,6 @@
 [submodule "vendor/grammars/Sublime-Nit"]
 	path = vendor/grammars/Sublime-Nit
 	url = https://github.com/R4PaSs/Sublime-Nit
-[submodule "vendor/grammars/language-hy"]
-	path = vendor/grammars/language-hy
-	url = https://github.com/rwtolbert/language-hy
 [submodule "vendor/grammars/Racket"]
 	path = vendor/grammars/Racket
 	url = https://github.com/soegaard/racket-highlight-for-github

grammars.yml

@@ -389,8 +389,6 @@ vendor/grammars/language-haskell:
 - source.haskell
 - source.hsc2hs
 - text.tex.latex.haskell
-vendor/grammars/language-hy:
-- source.hy
 vendor/grammars/language-inform7:
 - source.inform7
 vendor/grammars/language-javascript:

lib/linguist/languages.yml

@@ -1755,7 +1755,7 @@ Hy:
   - ".hy"
   aliases:
   - hylang
-  tm_scope: source.hy
+  tm_scope: none
   language_id: 159
 HyPhy:
   type: programming