intel/pci_ids: Drop non-upstream dg2 pci-ids

@majanes, @ngcortes, @ybogdano: Can you verify CI will not be impacted by removing these dg2 pci-ids? I think all CI systems with dg2 cards are running drm-tip kernels now, and drm-tip doesn't include these pci-ids, so I don't expect it to be a problem.

These pci-ids should be included in !14523, since these pci-ids will only be supported by kernels that support the forked Linux uapi. (Note that !14523 will never be merged into upstream Mesa.)

Ref: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/drm/i915_pciids.h?h=v6.0-rc3#n695
Fixes: 398a9be9 ("intel/dev: Enable remaining DG2 and ATS-M device IDs")