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-Params-Coerce.spec

@@ -9,7 +9,6 @@ Source0:	http://search.cpan.org/CPAN/authors/id/A/AD/ADAMK/Params-Coerce-%{versi
 # Fix building on Perl without "." in @INC, CPAN RT#121730
 Patch0:		Params-Coerce-0.14-Fix-building-on-Perl-without-.-in-INC.patch
 BuildArch:	noarch
-BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root-%(id -nu)
 BuildRequires:	perl-generators
 BuildRequires:	perl(Carp)
 BuildRequires:	perl(Cwd)