Remove strip_debug

We don't need it as we attach both production and debug versions of Ember.js
anyway.

Assetfile

@@ -64,7 +64,6 @@ input assets.scripts do
 
   if assets.production?
     match 'min/app.js' do
-      strip_debug
       # uglify squeeze: true
       concat 'app.js'
     end

lib/travis/assets/filters.rb

@@ -88,21 +88,6 @@ module Travis
           super
         end
       end
-
-      class StripDebug < Rake::Pipeline::Filter
-        def generate_output(inputs, output)
-          inputs.each do |input|
-            source = File.read(input.fullpath)
-            source = strip_debug(source)
-            source = Uglifier.compile(source)
-            output.write source
-          end
-        end
-
-        def strip_debug(source)
-          source.gsub(%r{^(\s)*Ember\.(assert|deprecate|warn)\((.*)\).*$}, "")
-        end
-      end
     end
   end
 end

lib/travis/assets/helpers.rb

@@ -7,10 +7,6 @@ module Travis
         filter(Filters::Handlebars, *args, &block)
       end
 
-      def strip_debug(*args, &block)
-        filter(Filters::StripDebug, *args, &block)
-      end
-
       def safe_concat(*args, &block)
         if args.first.kind_of?(Array)
           filter(Filters::OrderingSafeConcat, *args, &block)