[SYCL]Remove deprecated device traits

[abhilash1910]

From https://github.com/intel/llvm/blob/sycl/sycl/doc/extensions/supported/sycl_ext_intel_device_info.md#deprecated-queries
cc @steffenlarsen

[steffenlarsen]

LGTM! Tag @stdale-intel & @gmlueck to confirm that we are ready for this removal.

[gmlueck]

LGTM! Tag @stdale-intel & @gmlueck to confirm that we are ready for this removal.

These APIs have been deprecated for a while, and it would have been OK to remove them in the 2025.0 release, but we missed that window. I think our rules say that we now need to wait for 2026.0 before they can be removed, but maybe @stdale-intel has a different understanding.

If we do need to wait, can we change this PR to surround the definitions with the "preview breaking changes" macro? That will remind us to remove them later when 2026.0 comes around.

Either way, I think this PR is not complete:

• It looks like there are references also to these descriptors in "sycl/include/sycl/info/device_traits_deprecated.def". Should those be removed (of #ifdefed also)?
• The section in the specification "sycl/doc/extensions/supported/sycl_ext_intel_device_info.md" should also be removed when we remove the definitions.

[abhilash1910]

LGTM! Tag @stdale-intel & @gmlueck to confirm that we are ready for this removal.

These APIs have been deprecated for a while, and it would have been OK to remove them in the 2025.0 release, but we missed that window. I think our rules say that we now need to wait for 2026.0 before they can be removed, but maybe @stdale-intel has a different understanding.

If we do need to wait, can we change this PR to surround the definitions with the "preview breaking changes" macro? That will remind us to remove them later when 2026.0 comes around.

Either way, I think this PR is not complete:

• It looks like there are references also to these descriptors in "sycl/include/sycl/info/device_traits_deprecated.def". Should those be removed (of #ifdefed also)?
• The section in the specification "sycl/doc/extensions/supported/sycl_ext_intel_device_info.md" should also be removed when we remove the definitions.

Thanks @gmlueck for the review. I think both the points are valid and have made necessary changes to this PR.

[gmlueck]

Thanks @gmlueck for the review. I think both the points are valid and have made necessary changes to this PR.

Did @stdale-intel say it was OK to remove these in 2025.1?