Gemfile: remove obsolete gems

Gemfile

@@ -6,9 +6,7 @@ gem "middleman-livereload"
 gem "middleman-deploy"
 gem 'rb-inotify', require: false
 gem 'rb-fsevent', require: false
-gem "compass-holmes"
 gem 'oily_png'
 gem "sass"
 gem "slim"
 gem "rake"
-gem "susy"

Gemfile.lock

@@ -13,8 +13,6 @@ GEM
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
       sass (~> 3.2.17)
-    compass-holmes (0.1.1)
-      compass (>= 0.11)
     em-websocket (0.5.0)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.5.3)
@@ -99,9 +97,6 @@ GEM
     sprockets-sass (1.0.3)
       sprockets (~> 2.0)
       tilt (~> 1.1)
-    susy (1.0.9)
-      compass (>= 0.12.2)
-      sass (>= 3.2.0)
     temple (0.6.7)
     thor (0.19.1)
     tilt (1.4.1)
@@ -114,7 +109,6 @@ PLATFORMS
 
 DEPENDENCIES
   compass
-  compass-holmes
   middleman
   middleman-deploy
   middleman-livereload
@@ -124,4 +118,3 @@ DEPENDENCIES
   rb-inotify
   sass
   slim
-  susy