move common statements into its only use in vool

lib/common/list.rb

@@ -9,7 +9,6 @@ module Common
       @next = nekst
       nekst
     end
-    alias :<< :set_next
 
     # during translation we replace one by one
     def replace_next( nekst )
@@ -44,6 +43,7 @@ module Common
     def append( code )
       last.set_next code
     end
+    alias :<< :append
 
     def length( labels = [] )
       ret = 1

lib/common/statements.rb

@@ -1,35 +0,0 @@
-module Common
-  #extracted to resuse
-  module Statements
-    attr_reader :statements
-    def initialize(statements)
-      @statements = statements
-    end
-
-    def empty?
-      @statements.empty?
-    end
-    def single?
-      @statements.length == 1
-    end
-    def first
-      @statements.first
-    end
-    def last
-      @statements.last
-    end
-    def length
-      @statements.length
-    end
-    def [](i)
-      @statements[i]
-    end
-    def <<(o)
-      @statements << o
-      self
-    end
-    def add_array(a)
-      @statements += a
-    end
-  end
-end