snappy: remove libXtst from deps, which is platform dep
snappy: remove libXtst from deps, which is platform dep

nzjrs/cerbero,fluendo/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,nicolewu/cerbero,flexVDI/cerbero,ramaxlo/cerbero,EricssonResearch/cerbero,EricssonResearch/cerbero,multipath-rtp/cerbero,ford-prefect/cerbero,sdroege/cerbero,davibe/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,BigBrother-International/gst-cerbero,justinjoy/cerbero,jackjansen/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,superdump/cerbero,BigBrother-International/gst-cerbero,nicolewu/cerbero,shoreflyer/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,ikonst/cerbero,centricular/cerbero,lubosz/cerbero,sdroege/cerbero,shoreflyer/cerbero,ikonst/cerbero,superdump/cerbero,cee1/cerbero-mac,ramaxlo/cerbero,brion/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,ramaxlo/cerbero,GStreamer/cerbero,nzjrs/cerbero,centricular/cerbero,AlertMe/cerbero,brion/cerbero,nirbheek/cerbero-old,ylatuya/cerbero,superdump/cerbero,sdroege/cerbero,AlertMe/cerbero,ramaxlo/cerbero,multipath-rtp/cerbero,nzjrs/cerbero,EricssonResearch/cerbero,fluendo/cerbero,davibe/cerbero,flexVDI/cerbero,justinjoy/cerbero,jackjansen/cerbero,shoreflyer/cerbero,flexVDI/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,OptoFidelity/cerbero,ramaxlo/cerbero,fluendo/cerbero,atsushieno/cerbero,shoreflyer/cerbero,lubosz/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,ikonst/cerbero,superdump/cerbero,nirbheek/cerbero,ford-prefect/cerbero,flexVDI/cerbero,EricssonResearch/cerbero,sdroege/cerbero,AlertMe/cerbero,cee1/cerbero-mac,nirbheek/cerbero-old,jackjansen/cerbero-2013,atsushieno/cerbero,atsushieno/cerbero,nirbheek/cerbero-old,BigBrother-International/gst-cerbero,jackjansen/cerbero,ylatuya/cerbero,ikonst/cerbero,nirbheek/cerbero-old,ylatuya/cerbero,nicolewu/cerbero,davibe/cerbero,centricular/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,ford-prefect/cerbero,centricular/cerbero,nirbheek/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,BigBrother-International/gst-cerbero,fluendo/cerbero,GStreamer/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,cee1/cerbero-mac,nirbheek/cerbero,brion/cerbero,ylatuya/cerbero,lubosz/cerbero,atsushieno/cerbero,fluendo/cerbero,OptoFidelity/cerbero,centricular/cerbero,shoreflyer/cerbero,nirbheek/cerbero,multipath-rtp/cerbero,nzjrs/cerbero,sdroege/cerbero,GStreamer/cerbero,jackjansen/cerbero-2013,GStreamer/cerbero,brion/cerbero,davibe/cerbero,OptoFidelity/cerbero,EricssonResearch/cerbero,multipath-rtp/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,BigBrother-International/gst-cerbero,jackjansen/cerbero,lubosz/cerbero,ikonst/cerbero,jackjansen/cerbero-2013,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,atsushieno/cerbero,GStreamer/cerbero,justinjoy/cerbero,AlertMe/cerbero,jackjansen/cerbero-2013,brion/cerbero,OptoFidelity/cerbero,flexVDI/cerbero,AlertMe/cerbero,ford-prefect/cerbero,jackjansen/cerbero-2013,justinjoy/cerbero,multipath-rtp/cerbero,cee1/cerbero-mac,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,nzjrs/cerbero