Remove RHEL package patch since it has been committed upstream.

test/patch/rhel-package.patch

@@ -1,37 +0,0 @@
---- pgbackrest.spec
-+++ pgbackrest.spec
-@@ -28,11 +28,6 @@
- %setup -q -n %{name}-release-%{version}
- 
- %build
--pushd libc
--perl Makefile.PL
--%{__make}
--popd
--
- pushd src
- %{__make}
- popd
-@@ -44,12 +39,6 @@
- %{__install} -D -d -m 0700 %{buildroot}/var/spool/%{name}
- %{__install} -D -d -m 0755 %{buildroot}%{_sysconfdir}
- %{__install} %{SOURCE1} %{buildroot}/%{_sysconfdir}/%{name}.conf
--%{__cp} -a lib/* %{buildroot}%{perl_vendorlib}/
--%{__mkdir} -p %{buildroot}%{perl_vendorarch}/auto/pgBackRest/LibC
--%{__cp} -a libc/blib/arch/auto/pgBackRest/LibC/* %{buildroot}%{perl_vendorarch}/auto/pgBackRest/LibC
--%{__cp} -a libc/blib/lib/auto/pgBackRest/LibC/* %{buildroot}%{perl_vendorarch}/auto/pgBackRest/LibC
--%{__mkdir} -p %{buildroot}%{perl_vendorarch}/pgBackRest
--%{__cp} -a libc/blib/lib/pgBackRest/* %{buildroot}%{perl_vendorarch}/pgBackRest
- %{__cp} -a src/%{name} %{buildroot}%{_bindir}/%{name}
- 
- %clean
-@@ -64,9 +53,6 @@
- %endif
- %{_bindir}/%{name}
- %config(noreplace) %attr (644,root,root) %{_sysconfdir}/%{name}.conf
--%{perl_vendorlib}/pgBackRest/
--%{perl_vendorarch}/pgBackRest/
--%{perl_vendorarch}/auto/pgBackRest/LibC
- %attr(-,postgres,postgres) /var/log/%{name}
- %attr(-,postgres,postgres) %{_sharedstatedir}/%{name}
- %attr(-,postgres,postgres) /var/spool/%{name}