patch 8.2.4273: the EBCDIC support is outdated

Problem:    The EBCDIC support is outdated.
Solution:   Remove the EBCDIC support.

src/version.c

@@ -231,11 +231,7 @@ static char *(features[]) =
 #else
 	"-dnd",
 #endif
-#ifdef EBCDIC
-	"+ebcdic",
-#else
 	"-ebcdic",
-#endif
 #ifdef FEAT_EMACS_TAGS
 	"+emacs_tags",
 #else
@@ -750,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4273,
 /**/
     4272,
 /**/