agl-weston-remoting: Remove as will no longer be necessary

agl-weston-remoting: Remove as will no longer be necessary

We no longer make use of weston remoting plugin and configuration
should take place directly in meta-agl-kvm-demo. By default we build now
PipeWire and pull that in whenever necessary. As such we would not need
this feature.

Bug-AGL: SPEC-5235
Change-Id: I5096948a05e9cc56497e9068281234b39c4f714b
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/30612
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>