perl.h: Remove ERRHV

It has been unused by the core since 5.6.0 (98eae8f58) and is
unused on CPAN.

diff --git a/perl.h b/perl.h
index b40f141..dc140bd 100644 (file)
--- a/perl.h
+++ b/perl.h
@@ -1221,8 +1221,6 @@ EXTERN_C char *crypt(const char *, const char *);
 # define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
 #endif
 
-#define ERRHV GvHV(PL_errgv)   /* XXX unused, here for compatibility */
-
 #ifndef errno
        extern int errno;     /* ANSI allows errno to be an lvalue expr.
                               * For example in multithreaded environments