gumstix-test-image: remove failing mplayer2
gumstix-test-image: remove failing mplayer2

The mplayer2 package is currently broken so remove it from this image.
Also pull in any packages under the test-apps feature.

Signed-off-by: Ash Charles <80cee6ff557ba1c5981cd5d98755c09f634abbac@gmail.com>

allsey87/meta-bebot-temp,allsey87/meta-bebot-temp,gumstix/meta-gumstix-extras,gumstix/meta-gumstix-extras,gumstix/meta-gumstix-extras,allsey87/meta-bebot-temp