Get rid of duplicate LICENSE entry for the Valgrind

client API header.

TBR=erik.corry@gmail.com
Review URL: http://codereview.chromium.org/245021

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2970 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

LICENSE

@@ -24,9 +24,6 @@ are:
   - Valgrind client API header, located at third_party/valgrind/valgrind.h
     This is release under the BSD license.
 
-  - Valgrind client API header, located at third_party/valgrind/valgrind.h
-    This is release under the BSD license.
-
 These libraries have their own licenses; we recommend you read them,
 as their terms may differ from the terms below.