test: Remove sparc(64)-illumos from llvm_targets.

Illumos dropped support for SPARC many years ago.

Author: alexrp

test/llvm_targets.zig

@@ -242,15 +242,13 @@ const targets = [_]std.Target.Query{
  // .{ .cpu_arch = .s390x, .os_tag = .zos, .abi = .none },
 
  // .{ .cpu_arch = .sparc, .os_tag = .freestanding, .abi = .none },
- // .{ .cpu_arch = .sparc, .os_tag = .illumos, .abi = .none },
  // .{ .cpu_arch = .sparc, .os_tag = .linux, .abi = .gnu },
  // .{ .cpu_arch = .sparc, .os_tag = .linux, .abi = .none },
  // .{ .cpu_arch = .sparc, .os_tag = .netbsd, .abi = .none },
  // .{ .cpu_arch = .sparc, .os_tag = .rtems, .abi = .none },
 
  .{ .cpu_arch = .sparc64, .os_tag = .freestanding, .abi = .none },
  .{ .cpu_arch = .sparc64, .os_tag = .haiku, .abi = .none },
- .{ .cpu_arch = .sparc64, .os_tag = .illumos, .abi = .none },
  .{ .cpu_arch = .sparc64, .os_tag = .linux, .abi = .gnu },
  .{ .cpu_arch = .sparc64, .os_tag = .linux, .abi = .none },
  .{ .cpu_arch = .sparc64, .os_tag = .netbsd, .abi = .none },