minicom: remove unused patch files

* they were removed from SRC_URI in:
  https://git.openembedded.org/openembedded-core/commit/?id=41f8760dd8a8ac388389bc17dbc5e0ae0f64bf57



Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit a0f28cd8)
Signed-off-by: Steve Sakoman <steve@sakoman.com>