Drop obsolete simple-dmabuf-drm build option

meson now fails the build for invalid build options

Backport fix from, https://salsa.debian.org/xorg-team/wayland/weston/-/commit/4c76ecb8da7a44426bea55eb774629b2a4ff9dc2

Closes: #998603

Fixes: https://phabricator.apertis.org/T8744