remove a build system tweak related to Python 3

... no longer needed

units.spec

@@ -1,11 +1,10 @@
 Summary: A utility for converting amounts from one unit to another
 Name: units
 Version: 2.22
-Release: 2%{?dist}
+Release: 3%{?dist}
 Source: https://ftp.gnu.org/gnu/units/%{name}-%{version}.tar.gz
 URL: https://www.gnu.org/software/units/units.html
 License: GPLv3+
-BuildRequires: automake
 BuildRequires: bison
 BuildRequires: gcc
 BuildRequires: make
@@ -25,11 +24,6 @@ well as conversions such as Fahrenheit to Celsius.
 %prep
 %autosetup -p1
 
-# make units_cur use Python 3
-sed -e 's|^AC_PATH_PROG(PYTHON, .*$|PYTHON=%{__python3}\nAC_SUBST(PYTHON)|' \
-    -i configure.ac
-autoreconf -fiv
-
 %build
 %configure
 %make_build
@@ -58,6 +52,9 @@ make check
 %{_mandir}/man1/*
 
 %changelog
+* Tue Sep 06 2022 Kamil Dudka <kdudka@redhat.com> - 2.22-3
+- remove a build system tweak related to Python 3 no longer needed
+
 * Tue Sep 06 2022 Kamil Dudka <kdudka@redhat.com> - 2.22-2
 - replace an absolute symlink by a relative symlink
 - use %%make_build and %%make_install RPM macros