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6583 remove whole-process swapping

@@ -62,15 +62,10 @@
 extern int hz;                  /* system clock rate */
 extern struct vnode *rootdir;   /* pointer to vnode of root directory */
 extern struct vnode *devicesdir;        /* pointer to /devices vnode */
 extern int interrupts_unleashed;        /* set after the spl0() in main() */
 
-extern char runin;              /* scheduling flag */
-extern char runout;             /* scheduling flag */
-extern char wake_sched;         /* causes clock to wake swapper on next tick */
-extern char wake_sched_sec;     /* causes clock to wake swapper after a sec */
-
 extern pgcnt_t  maxmem;         /* max available memory (pages) */
 extern pgcnt_t  physmem;        /* physical memory (pages) on this CPU */
 extern pfn_t    physmax;        /* highest numbered physical page present */
 extern pgcnt_t  physinstalled;  /* physical pages including PROM/boot use */