rustc: Correct enable-profiler linux check

[Artturin]

remove the isRedox condition which was added because stdenv.isLinux uses hostPlatform, after specifying targetPlatform it's no longer necessary.

Split from #314832

Description of changes

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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[alyssais]

Makes sense

[Artturin]

Will cause cross rebuilds so targetting staging

[philiptaron]

Will cause cross rebuilds so targetting staging

No rebuilds on non-cross, so I do prefer that it targets master.

[alyssais]

Yeah, we merge non-Hydra-relevant cross rebuilds into master all the time.

[Artturin]

rustc is in release-cross.nix but it seems it'll only rebuild the bsd's as they're the only non-linux which uses common

[Artturin]

Double checked and there's no profiler on redox.

2 approvals, merging.

EDIT @philiptaron you merged while I was writing this 😄

[philiptaron]

Same logic as you my friend. 👍🏻