Revert "OS-8005 bhyve memory pressure needs to target ARC better (#354)"
This reverts commit a6033573eedd94118d2b9e65f45deca0bf4b42f7.

@@ -36,11 +36,11 @@
  * A full copy of the text of the CDDL should have accompanied this
  * source.  A copy of the CDDL is also available via the Internet at
  * http://www.illumos.org/license/CDDL.
  *
  * Copyright 2015 Pluribus Networks Inc.
- * Copyright 2020 Joyent, Inc.
+ * Copyright 2019 Joyent, Inc.
  * Copyright 2020 Oxide Computer Company
  */
 
 #ifndef _VMMAPI_H_
 #define _VMMAPI_H_

@@ -314,11 +314,10 @@
 int     vm_wrlock_cycle(struct vmctx *ctx);
 int vm_get_run_state(struct vmctx *ctx, int vcpu, enum vcpu_run_state *state,
     uint8_t *sipi_vector);
 int vm_set_run_state(struct vmctx *ctx, int vcpu, enum vcpu_run_state state,
     uint8_t sipi_vector);
-int     vm_arc_resv(struct vmctx *ctx, size_t);
 #endif  /* __FreeBSD__ */
 
 #ifdef  __FreeBSD__
 /*
  * FreeBSD specific APIs