🛀 remove outdated selector engines

Author: codemasher

.gitmodules

@@ -7,14 +7,3 @@
 [submodule "vendor/sprockets"]
   path = vendor/sprockets
   url = git://github.com/sstephenson/sprockets.git
-
-
-[submodule "vendor/nwmatcher/repository"]
-	path = vendor/nwmatcher/repository
-	url = git://github.com/dperini/nwmatcher.git
-[submodule "vendor/sizzle/repository"]
-	path = vendor/sizzle/repository
-	url = git://github.com/jquery/sizzle.git
-[submodule "vendor/slick/repository"]
-	path = vendor/slick/repository
-	url = git://github.com/mootools/slick.git