diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index afea17f..2971859 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -30,28 +30,4 @@ end
 
 class Project < SuperModel::Base
   belongs_to :category
-
-  class << self
-    protected
-
-    def sanitize_sql(hash_cond)
-      case hash_cond
-      when Hash
-        sanitize_hash(hash_cond).join(' AND ')
-      when Array
-        hash_cond.shift.gsub('?'){"#{hash_cond.shift.inspect}"}
-      when String then hash_cond
-      end
-    end
-
-    def sanitize_hash(hash)
-      hash.map do |name, value|
-        if Hash === value
-          sanitize_hash(value).map{|cond| "#{name}.#{cond}"}
-        else
-          "#{name}=#{value}"
-        end
-      end.flatten
-    end
-  end
 end