!4 Remove requires python3-contextlib

From: @cherry530 
Reviewed-by: @caodongxia 
Signed-off-by: @caodongxia

python-schema.spec

@@ -1,15 +1,13 @@
 %global _empty_manifest_terminate_build 0
 Name:		python-schema
 Version:	0.7.5
-Release:	1
+Release:	2
 Summary:	Simple data validation library
 License:	MIT
 URL:		https://github.com/keleshev/schema
 Source0:	https://github.com/keleshev/schema/archive/refs/tags/v0.7.5.tar.gz
 BuildArch:	noarch
 
-Requires:	python3-contextlib2
-
 %description
 **schema** is a library for validating Python data structures, such as those
 obtained from config-files, forms, external services or command-line
@@ -35,6 +33,7 @@ parsing, converted from JSON/YAML (or something else) to Python data-types.
 
 %prep
 %autosetup -n schema-0.7.5
+sed -i -e /contextlib2/d requirements.txt
 
 %build
 %py3_build
@@ -74,6 +73,9 @@ mv %{buildroot}/doclist.lst .
 %{_docdir}/*
 
 %changelog
+* Mon Jul 31 2023 xu_ping <707078654@qq.com> - 0.7.5-2
+- Remove requires python3-contextlib because want to use standard Python contextlib
+
 * Thu Jun 23 2022 houyingchao <houyingchao@h-partners.com> - 0.7.5-1
 - Upgrade to version 0.7.5