11630 remove checks for 64-bit capable hardware

@@ -19,10 +19,11 @@
  * CDDL HEADER END
  */
 /*
  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
+ * Copyright 2019 Peter Tribble.
  */
 
 #ifndef _BOOT_PLAT_H
 #define _BOOT_PLAT_H
 

@@ -88,11 +89,10 @@
 /* machdep.c */
 extern int  vac;
 
 extern void     fiximp(void);
 extern void     retain_nvram_page();
-extern int      cpu_is_ultrasparc_1(void);
 
 
 /* memlist.c */
 extern void             init_memlists(void);
 extern struct memlist   *fill_memlists(char *name, char *prop,