py-psutil: also remove unused patch

sysutils/py-psutil/patches/patch-psutil___psbsd.py

@@ -1,16 +0,0 @@
-$NetBSD: patch-psutil___psbsd.py,v 1.7 2022/03/28 21:57:36 wiz Exp $
-
-Fix reporting of cached memory on NetBSD.
-https://github.com/giampaolo/psutil/pull/2088
-
---- psutil/_psbsd.py.orig	2021-12-15 09:34:00.000000000 +0000
-+++ psutil/_psbsd.py
-@@ -189,6 +189,8 @@ def virtual_memory():
-                     buffers = int(line.split()[1]) * 1024
-                 elif line.startswith(b'MemShared:'):
-                     shared = int(line.split()[1]) * 1024
-+                elif line.startswith(b'Cached:'):
-+                    cached = int(line.split()[1]) * 1024
-     avail = inactive + cached + free
-     used = active + wired + cached
-     percent = usage_percent((total - avail), total, round_=1)