1 files changed, 0 insertions, 15 deletions
diff --git a/lib/arel/engines/memory/predicates.rb b/lib/arel/engines/memory/predicates.rb
index e233f3ba39..03d4f25b0a 100644
--- a/lib/arel/engines/memory/predicates.rb
+++ b/lib/arel/engines/memory/predicates.rb
@@ -1,25 +1,10 @@
 module Arel
-
   class Binary < Predicate
     def eval(row)
       operand1.eval(row).send(operator, operand2.eval(row))
     end
   end
 
-  class CompoundPredicate < Binary
-    def to_sql(formatter = nil)
-      "(#{operand1.to_sql(formatter)} #{predicate_sql} #{operand2.to_sql(formatter)})"
-    end
-  end
-
-  class Or < CompoundPredicate
-    def predicate_sql; "OR" end
-  end
-
-  class And < CompoundPredicate
-    def predicate_sql; "AND" end
-  end
-
   class Equality < Binary
     def operator; :== end
   end