py-scipy: remove stale patch

it was added in 1.7.1 but there is no checksum, so patch is skipped.
Package apparently builds fine without it.

math/py-scipy/patches/patch-scipy_stats_setup.py

@@ -1,15 +0,0 @@
-$NetBSD: patch-scipy_stats_setup.py,v 1.1 2021/11/02 18:51:02 adam Exp $
-
-Boost stats are not portable, e.g. compilation fails on NetBSD.
-
---- scipy/stats/setup.py.orig	2021-10-28 20:02:57.000000000 +0000
-+++ scipy/stats/setup.py
-@@ -79,7 +79,7 @@ def configuration(parent_package='', top
-     ext._pre_build_hook = pre_build_hook
- 
-     # add boost stats distributions
--    config.add_subpackage('_boost')
-+    #config.add_subpackage('_boost')
- 
-     # Type stubs
-     config.add_data_files('*.pyi')