qcacld-3.0: Remove pmo_dump_wow_ptrn() prototype

Change I47cce6123566b67d4aa0c56f1cf6738f4fdbf77d ("qcacmn: Initial
power manager offload skeleton") included a prototype for function
pmo_dump_wow_ptrn(), but not an implementation. Since subsequently
an implementation was never added, remove the unused prototype.

Change-Id: I4fda06ef5cabdbff069e542319a9d5296a0e932a
CRs-Fixed: 2380102

components/pmo/core/inc/wlan_pmo_wow.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -300,7 +300,6 @@ static inline uint8_t pmo_get_wow_user_ptrn(
 	return count;
 }
 
-void pmo_dump_wow_ptrn(struct pmo_wow_add_pattern *ptrn);
 /**
  * pmo_core_del_wow_pattern() - Function which will delete the WoWL pattern
  * @vdev: pointer to the vdev