Revert r37316

The commit introduces too many failures and disturbs release engineering.
Re-commit it with fixed tests.

Thu Oct 25 13:09:01 2012  NAKAMURA Usaku  <usa@ruby-lang.org>

       * parse.y: show a warning for concatenating string literals because
         it will be deprecated in the future.
         patched by mame (Yusuke Endoh) at [ruby-core:44207].
         [ruby-core:44156] [Feature #6265]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37327 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 0 insertions, 8 deletions

diff --git a/ChangeLog b/ChangeLog
index edde7cc3ec..60de2f6399 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -19,13 +19,6 @@ Thu Oct 25 13:35:07 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* tool/mkconfig.rb: remove string literal concatenation.
 
-Thu Oct 25 13:09:01 2012  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* parse.y: show a warning for concatenating string literals because
-	  it will be deprecated in the future.
-	  patched by mame (Yusuke Endoh) at [ruby-core:44207].
-	  [ruby-core:44156] [Feature #6265]
-
 Wed Oct 24 18:49:16 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/objspace/objspace.c (type2sym, count_objects_size): use enum
diff --git a/parse.y b/parse.y
index 7bf3149e2b..7eaab6b1b8 100644
--- a/parse.y
+++ b/parse.y
@@ -3810,7 +3810,6 @@ string		: tCHAR
 		| string string1
 		    {
 		    /*%%%*/
-			rb_warning0("string concatenation syntax will be deprecated");
 			$$ = literal_concat($1, $2);
 		    /*%
 			$$ = dispatch2(string_concat, $1, $2);