Remove supports-panic-backtrace test condition

[cptartur]

Stack:

• Macros V2 #3573
• Add v2 macros migration guide #3559
• Bump deps, use scarb in nightly #3553
• Remove supports-panic-backtrace test condition #3503 ⬅
• Run tests on a new and compatibility plugin #3502
• Runtime checks for _std packages #3470
• Use snforge_std or snforge_std_compatibility in snforge new #3466
• Update release workflows to publish _compatibility plugin #3465
• Add _compatibility package #3464
• Add tests for diagnostics #3424
• Fix gas tests #3421
• Disable scarb 2.10.0 specific tests #3420
• Run scarbfmt #3419
• Migrate to new macro syntax #3415

⚠️ Part of a stack created by spr. Do not merge manually using the UI - doing so may have unexpected results.

[cptartur]

Would it be better to have feature for scarb 2.12.* instead of running scarb to check version?

We'll use Scarb 2.12 as a default version (after it is released), check for scarb version is just to enable compatibility with scheduled tests running on older scarb. After 2.14 the check will be obsolete.

So maybe let's add feature for that. I would say this is our standard procedure and when you delete it cargo automatically shows places, where you referenced this

Since a lot of tests depends on runtime checks for scarb version (they need to pick either compatibility or standard package) I think it's easier to just do the same for backtrace.
Otherwise we still will have runtime checks for versions before 2.11 just not for backtrace.

[cptartur]

✓ Commit merged in pull request #3559