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-Declare-Constraints-Simple.spec

@@ -10,7 +10,6 @@ Group:		Development/Libraries
 URL:		http://search.cpan.org/dist/Declare-Constraints-Simple/
 Source0:	http://search.cpan.org/CPAN/authors/id/P/PH/PHAYLON/Declare-Constraints-Simple-%{version}.tar.gz
 Patch0:         Declare-Constraints-Simple-0.03-Fix-building-on-Perl-without-dot-in-INC.patch
-BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root-%(id -nu)
 BuildArch:	noarch
 # Module Build
 BuildRequires:	coreutils