Deprecate EVP_cleanup() and make it a no-op

EVP_cleanup() should not be called expicitly - we should leave
auto-deinit to clean this up instead.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>

crypto/objects/obj_dat.c

@@ -199,8 +199,8 @@ static void cleanup3_doall(ADDED_OBJ *a)
 }
 
 /*
- * The purpose of obj_cleanup_defer is to avoid EVP_cleanup() attempting to
- * use freed up OIDs. If necessary the actual freeing up of OIDs is delayed.
+ * The purpose of obj_cleanup_defer is to avoid evp_cleanup_intern() attempting
+ * to use freed up OIDs. If necessary the actual freeing up of OIDs is delayed.
  */
 int obj_cleanup_defer = 0;