distro/reach: Remove duplication of distro settings

To easy maintenance the duplication of distro settings with
O.S. Systems Embedded Linux has been removed. This is key to allow a
better understanding of the differences each distribution has and
isolate attention points.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
distro/reach-x11: Remove unused virtual setting

The default virtual/libx11 provider is indeed libx11 so the setting is
not necessary.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>