Remove roflscaling constants

activerecord/lib/arel/visitors/postgresql.rb

@@ -3,11 +3,6 @@
 module Arel # :nodoc: all
   module Visitors
     class PostgreSQL < Arel::Visitors::ToSql
-      CUBE = "CUBE"
-      ROLLUP = "ROLLUP"
-      GROUPING_SETS = "GROUPING SETS"
-      LATERAL = "LATERAL"
-
       private
 
         def visit_Arel_Nodes_Matches(o, collector)

activerecord/lib/arel/visitors/to_sql.rb

@@ -9,16 +9,6 @@ module Arel # :nodoc: all
     end
 
     class ToSql < Arel::Visitors::Visitor
-      WHERE    = " WHERE "    # :nodoc:
-      SPACE    = " "          # :nodoc:
-      COMMA    = ", "         # :nodoc:
-      GROUP_BY = " GROUP BY " # :nodoc:
-      ORDER_BY = " ORDER BY " # :nodoc:
-      WINDOW   = " WINDOW "   # :nodoc:
-      AND      = " AND "      # :nodoc:
-
-      DISTINCT = "DISTINCT"   # :nodoc:
-
       def initialize(connection)
         super()
         @connection = connection