size_t is no longer used in this file

git-svn-id: https://svn.r-project.org/R/trunk@87867 00db46b3-68df-0310-9c12-caf00c1e9a41

Author: ripley

src/include/R_ext/Error.h

@@ -26,12 +26,6 @@
 #ifndef R_ERROR_H_
 #define R_ERROR_H_
 
-#if defined(__cplusplus) && !defined(DO_NOT_USE_CXX_HEADERS)
-# include <cstddef>
-#else
-# include <stddef.h> /* for size_t */
-#endif
-
 #include <R_ext/Print.h>
 
 #ifdef  __cplusplus