mingw: unconditionally enable libssh2 in RPM

The libssh2 support in libvirt is not solely for phyp, it is used by the
remote driver too.
Reviewed-by: NAndrea Bolognani <abologna@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>

mingw-libvirt.spec.in

@@ -85,10 +85,8 @@ BuildRequires: gettext-devel
 BuildRequires: libtool
 %endif
 
-%if %{with_phyp}
 BuildRequires: mingw32-libssh2
 BuildRequires: mingw64-libssh2
-%endif
 %if %{with_esx}
 BuildRequires: mingw32-curl
 BuildRequires: mingw64-curl