!3 remove python2

From: @zhangtao2020
Reviewed-by: @small_leek
Signed-off-by: @small_leek

python-constantly.spec

@@ -1,12 +1,12 @@
 Name:           python-constantly
 Version:        15.1.0
-Release:        4
+Release:        5
 Summary:        Symbolic constants in Python
 License:        MIT
 URL:            https://github.com/twisted/constantly
 Source0:        https://files.pythonhosted.org/packages/source/c/constantly/constantly-15.1.0.tar.gz
 BuildArch:      noarch
-BuildRequires:  python2-devel python2dist(setuptools) python3-devel python3dist(setuptools)
+BuildRequires:  python3-devel python3dist(setuptools)
 
 %{?python_enable_dependency_generator}
 
@@ -15,15 +15,6 @@ A library that provides symbolic constant support. It includes
 collections and constants with text, numeric, and bit flag values.
 Originally twisted.python.constants from the Twisted project.
 
-%package -n     python2-constantly
-Summary:        Symbolic constants in Python
-%{?python_provide:%python_provide python2-constantly}
-
-%description -n python2-constantly
-A library that provides symbolic constant support. It includes
-collections and constants with text, numeric, and bit flag values.
-Originally twisted.python.constants from the Twisted project.
-
 %package -n     python3-constantly
 Summary:        Symbolic constants in Python
 %{?python_provide:%python_provide python3-constantly}
@@ -38,23 +29,19 @@ Originally twisted.python.constants from the Twisted project.
 rm -rf constantly.egg-info
 
 %build
-%py2_build
 %py3_build
 
 %install
-%py2_install
 %py3_install
 
-%files -n python2-constantly
-%doc README.rst LICENSE
-%{python2_sitelib}/constantly
-%{python2_sitelib}/constantly-15.1.0-py?.?.egg-info
-
 %files -n python3-constantly
 %doc README.rst LICENSE
 %{python3_sitelib}/constantly
 %{python3_sitelib}/constantly-15.1.0-py?.?.egg-info
 
 %changelog
+* Wed Oct 21 2020 zhangtao <zhangao221@huawei.com> - 15.1.0-5
+- delete python2
+
 * Fri Feb 21 2020 liangdong <liangdong10@huawei.com> - 15.1.0-4
 - Package init