Simplify running of tests

There were a test (common-req.t) which was writing to directory, from
which test run. It was fixed in 6.31.

perl-HTTP-Message.spec

@@ -90,7 +90,6 @@ requests, responses and the headers contained within them.
 %package tests
 Summary:        Tests for %{name}
 Requires:       %{name} = %{?epoch:%{epoch}:}%{version}-%{release}
-Requires:       coreutils
 Requires:       perl-Test-Harness
 Requires:       perl(URI::URL)
 
@@ -116,15 +115,8 @@ perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1 NO_PERLLOCAL=1
 mkdir -p %{buildroot}%{_libexecdir}/%{name}
 cp -a t %{buildroot}%{_libexecdir}/%{name}
 cat > %{buildroot}%{_libexecdir}/%{name}/test << 'EOF'
-#!/bin/bash
-set -e
-# t/status-old.t writes into CWD
-DIR=$(mktemp -d)
-cp -a %{_libexecdir}/%{name}/t "$DIR"
-pushd "$DIR"
-prove -I . -j "$(getconf _NPROCESSORS_ONLN)"
-popd
-rm -r "$DIR"
+#!/bin/sh
+cd %{_libexecdir}/%{name} && exec prove -I . -j "$(getconf _NPROCESSORS_ONLN)"
 EOF
 chmod +x %{buildroot}%{_libexecdir}/%{name}/test
 %{_fixperms} %{buildroot}/*
@@ -145,6 +137,7 @@ make test
 %changelog
 * Wed May 12 2021 Michal Josef Špaček <mspacek@redhat.com> - 6.31-1
 - 6.31 bump
+- Simplify running of tests
 
 * Tue May 11 2021 Michal Josef Špaček <mspacek@redhat.com> - 6.30-1
 - 6.30 bump