Remove Gen10 support code

[mattst88]

Gen10 graphics never shipped, and the support code was disabled by default in commit 99adba9 ("Disable Gen10 driver code when -DGEN10=OFF") a few months ago.

 572 files changed, 2 insertions(+), 340589 deletions(-)

[mattst88]

Cc: @XinfengZhang

[mattst88]

Anything happening here?

[XinfengZhang]

@mattst88 what's the motivation about the change, it will not impact binary size, only impact the code base size.

[mattst88]

Right.

It seems like an obviously good thing for the codebase to remove 340 thousand lines of code that will never be used.

[linyaa-kiwi]

I love drivers for gen10 gpus. The driver performance and quality is so unbelievable that it can't even be measured.

Despite my passion for git repos with a fat line count, though, this MR is obviously the right thing to do.

[XinfengZhang]

@mattst88 , could you help to rebase it?
suppose it still need some time to merge it. the change will be cherry-picked to some other repos to verify whether there are other dependencies need to be removed., then merge it.

[mattst88]

Rebased.

Just once I would like to be able to have a contribution to this project accepted without needing to repeatedly ping the PR over multiple months.

[mattst88]

In case it wasn't apparent why removing Gen10 driver code was a good idea, take for example the (now two) cases of people wasting their time fixing Coverity issues in 100% dead code:

commit c1f57e463b924bfed35783b6530e2b86121894ae
Author: pengxin99 <[email protected]>
Date:   Tue Sep 26 13:36:57 2023 +0800

    [Decode] Fix some linux coverity issues

Do you need me to rebase this again?

[Sherry-Lin]

Yes, @mattst88 Would you help rebase again? There is long holiday in coming one week. Please expect the merge after holiday. Thanks.

[mattst88]

Rebased.

[mattst88]

commit c4442ddad7f8a83bcd2d9db24ebfcae5c64531ed
Author: luleilei1 <[email protected]>
Date:   Thu Sep 28 10:25:24 2023 +0800

    Revert "[Decode] Fix some linux coverity issues"
    
    This reverts commit intel-innersource/drivers.gpu.unified#c1f57e463

 media_driver/agnostic/gen10/hw/vdbox/mhw_vdbox_hcp_g10_X.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Seriously? Stop this.

[hanlong1]

Hi @mattst88, can you rebase the change? new conflict happened during verification