build: remove special definition of Runemax on Plan 9

The Bell Labs distribution now supports 21-bit runes.

R=golang-dev, akumar
CC=golang-dev
https://golang.org/cl/9249045

diff --git a/include/plan9/libc.h b/include/plan9/libc.h
index dcecc7c8b8963355a8fb1cb4d393f15d41982665..9c86df0c77f04d89e197d58040f58d46b781696e 100644 (file)
--- a/include/plan9/libc.h
+++ b/include/plan9/libc.h
@@ -2,16 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#define Runemax Plan9Runemax
 #include "/sys/include/libc.h"
-#undef Runemax
 #include "/sys/include/ctype.h"
 
-enum
-{
-       Runemax = 0x10FFFF, /* maximum rune value */
-};
-
 char*  getgoos(void);
 char*  getgoarch(void);
 char*  getgoroot(void);