remove less dependency

Gemfile.lock

@@ -70,7 +70,6 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.4.0)
-    commonjs (0.2.6)
     compass (0.12.2)
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
@@ -131,11 +130,6 @@ GEM
     kaminari-bootstrap (0.1.3)
       kaminari (>= 0.13.0)
       rails
-    less (2.2.2)
-      commonjs (~> 0.2.6)
-    less-rails (2.2.6)
-      actionpack (>= 3.1)
-      less (~> 2.2.0)
     libwebsocket (0.1.7.1)
       addressable
       websocket
@@ -248,10 +242,6 @@ GEM
     treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)
-    twitter-bootstrap-rails (2.1.7)
-      actionpack (>= 3.1)
-      execjs
-      railties (>= 3.1)
     tzinfo (0.3.35)
     uglifier (1.3.0)
       execjs (>= 0.3.0)
@@ -278,7 +268,6 @@ DEPENDENCIES
   haml-rails
   jquery-rails
   kaminari-bootstrap
-  less-rails
   mini_magick
   mustache
   pry
@@ -293,5 +282,4 @@ DEPENDENCIES
   slim-rails
   steak
   thin
-  twitter-bootstrap-rails
   uglifier (>= 1.0.3)