meta-agl-bsp: Update weston-ini-conf fragments

meta-agl-bsp: Update weston-ini-conf fragments

Remove ivi-shell and ivi-extension related configuration fragments,
and update the core.cfg fragment to remove related configuration, they
are now unnecessary with the new compositor.  Also remove commented
out old gst-record tweak from the bbappend.

Bug-AGL: SPEC-3469

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I67b0530c2e2929d07d2032de25d0e5e4706dbbb7
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/25009
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-build: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
ci-image-boot-test: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
Reviewed-by: Marius Vlad <marius.vlad@collabora.com>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>