kill grammar-view.css, uses overlay and select list defaults

src/app/grammar-view.coffee

@@ -4,7 +4,7 @@ SelectList = require 'select-list'
 module.exports =
 class GrammarView extends SelectList
 
-  @viewClass: -> "#{super} grammar-view"
+  @viewClass: -> "#{super} grammar-view from-top overlay"
 
   filterKey: 'name'
 
@@ -12,7 +12,6 @@ class GrammarView extends SelectList
     @currentGrammar = @editor.getGrammar()
     @path = @editor.getPath()
     @autoDetect = name: 'Auto Detect'
-    requireStylesheet 'grammar-view.css'
     @command 'editor:select-grammar', =>
       @cancel()
       false

static/grammar-view.css

@@ -1,8 +0,0 @@
-.grammar-view {
-  width: 50%;
-  margin-left: -25%;
-}
-
-.grammar-view ol {
-  max-height: 300px;
-}

themes/atom-dark-ui/grammar-view.css

@@ -1,17 +0,0 @@
-.grammar-view ol li {
-  line-height: 16px;
-}
-
-.grammar-view ol li.grammar {
-  padding-left: 21px;
-}
-
-.grammar-view ol li.current-grammar:before {
-  font-family: 'Octicons Regular';
-  width: 16px;
-  height: 16px;
-  margin-right: 5px;
-  -webkit-font-smoothing: antialiased;
-  color: #ccc;
-  content: '\f03a';
-}