We add x11 into REQUIRED_DISTRO_FEATURES because one of the dependency
pavucontrol requires x11, now, pavucontrol doesn't require x11, so
remove x11 from REQUIRED_DISTRO_FEATURES
Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>