gst-uninstalled: remove ffmpeg libs from dynamic linker paths
gst-uninstalled: remove ffmpeg libs from dynamic linker paths

We link those libs into the plugin statically, or use external
system libs, but never the internal snapshot dynamically.

jpxiong/gstreamer,mparis/gstreamer,collects/gstreamer,mparis/gstreamer,Lachann/gstreamer,lubosz/gstreamer,cfoch/gstreamer,cablelabs/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,jpakkane/gstreamer,krichter722/gstreamer,lovebug356/gstreamer,centricular/gstreamer,lubosz/gstreamer,surround-io/gstreamer,krichter722/gstreamer,centricular/gstreamer,lovebug356/gstreamer,collects/gstreamer,lubosz/gstreamer,krieger-od/gstreamer,surround-io/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,justinjoy/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,krichter722/gstreamer,krieger-od/gstreamer,centricular/gstreamer,collects/gstreamer,ensonic/gstreamer,jpxiong/gstreamer,mparis/gstreamer,krieger-od/gstreamer,centricular/gstreamer,surround-io/gstreamer,cablelabs/gstreamer,ensonic/gstreamer,justinjoy/gstreamer,ensonic/gstreamer,justinjoy/gstreamer,krichter722/gstreamer,cfoch/gstreamer,cfoch/gstreamer,jpakkane/gstreamer,surround-io/gstreamer,surround-io/gstreamer,jpakkane/gstreamer,ensonic/gstreamer,cablelabs/gstreamer,lovebug356/gstreamer,cfoch/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,Lachann/gstreamer,lubosz/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,ensonic/gstreamer,krieger-od/gstreamer,jpakkane/gstreamer,shelsonjava/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,shelsonjava/gstreamer,cablelabs/gstreamer,krieger-od/gstreamer,Lachann/gstreamer,justinjoy/gstreamer,jpakkane/gstreamer,shelsonjava/gstreamer,cablelabs/gstreamer,mparis/gstreamer,krichter722/gstreamer,jpxiong/gstreamer,Lachann/gstreamer,lovebug356/gstreamer,lubosz/gstreamer,collects/gstreamer,collects/gstreamer,StreamUtils/gstreamer,Lachann/gstreamer,mparis/gstreamer