Remove what have been backported to 1.8.7.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16747 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

doc/NEWS

@@ -50,7 +50,6 @@ Incompatible (Trivial)
           o Dir.exist?
     * IO operations
           o Non-blocking IO
-          o IO#getbyte, IO#readbyte, StringIO#getbyte, StringIO#readbyte
           o Kernel#open takes encoding specified
           o IO#initialize now accepts an IO argument
           o StringIO#readpartial
@@ -97,7 +96,6 @@ Compatible
           o Module#class_variable_defined?
           o #class_variable_{set,get}
           o Class of singleton classes
-          o #module_exec
     * Binding#eval
     * Blocks and Procs
           o Arity of blocks without arguments
@@ -138,7 +136,6 @@ Compatible
           o String#force_encoding
           o String#unpack with a block
           o String#hash
-          o String#upto
           o String.try_convert
 	  o String.encoding, String#force_encoding, String#encode
     * Symbol