Remove BuildRoot definition

None of currently supported distributions need that.
It was needed last for EL5 which is EOL now

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

perl-Test-Script-Run.spec

@@ -8,7 +8,6 @@ URL:            http://search.cpan.org/dist/Test-Script-Run/
 Source0:        http://www.cpan.org/authors/id/S/SU/SUNNAVY/Test-Script-Run-%{version}.tar.gz
 # Fix building on Perl without "." in @INC, CPAN RT#121704
 Patch0:         Test-Script-Run-0.08-Fix-building-on-Perl-without-.-in-INC.patch
-BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildArch:      noarch
 BuildRequires:  coreutils
 BuildRequires:  findutils