remove component base style dependency

src/components/action-sheet/action-sheet.vue

@@ -83,7 +83,6 @@
 </script>
 
 <style lang="stylus" rel="stylesheet/stylus">
-  @require "../../common/stylus/base.styl"
   @require "../../common/stylus/mixin.styl"
   @require "../../common/stylus/variable.styl"
 

src/components/dialog/dialog.vue

@@ -149,7 +149,6 @@
 <style lang="stylus" rel="stylesheet/stylus">
   @require "../../common/stylus/variable.styl"
   @require "../../common/stylus/mixin.styl"
-  @require "../../common/stylus/base.styl"
 
   .cube-dialog-main
     width: 270px

src/components/index-list/index-list.vue

@@ -204,7 +204,6 @@
 <style lang="stylus" rel="stylesheet/stylus">
   @require "../../common/stylus/variable.styl"
   @require "../../common/stylus/mixin.styl"
-  @require "../../common/stylus/base.styl"
 
   .cube-index-list
     position: relative