patch 8.2.4273: the EBCDIC support is outdated

Problem:    The EBCDIC support is outdated.
Solution:   Remove the EBCDIC support.
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 500ae28..1b788db 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -2467,33 +2467,6 @@
 			ret_number,	    f_xor},
 };
 
-#if defined(EBCDIC) || defined(PROTO)
-/*
- * Compare funcentry_T by function name.
- */
-    static int
-compare_func_name(const void *s1, const void *s2)
-{
-    funcentry_T *p1 = (funcentry_T *)s1;
-    funcentry_T *p2 = (funcentry_T *)s2;
-
-    return STRCMP(p1->f_name, p2->f_name);
-}
-
-/*
- * Sort the function table by function name.
- * The sorting of the table above is ASCII dependent.
- * On machines using EBCDIC we have to sort it.
- */
-    void
-sortFunctions(void)
-{
-    size_t	funcCnt = ARRAY_LENGTH(global_functions);
-
-    qsort(global_functions, funcCnt, sizeof(funcentry_T), compare_func_name);
-}
-#endif
-
 /*
  * Function given to ExpandGeneric() to obtain the list of internal
  * or user defined function names.
@@ -5101,13 +5074,7 @@
 		0
 #endif
 		},
-	{"ebcdic",
-#ifdef EBCDIC
-		1
-#else
-		0
-#endif
-		},
+	{"ebcdic", 0 },
 	{"fname_case",
 #ifndef CASE_INSENSITIVE_FILENAME
 		1