simplify bootstrap/misc/job

Signed-off-by: onur-ozkan <work@onurozkan.dev>

Author: onur-ozkan

src/bootstrap/src/misc/job.rs

@@ -1,28 +1,18 @@
-#[cfg(any(target_os = "haiku", target_os = "hermit", not(any(unix, windows))))]
-pub use custom::*;
-
-#[cfg(all(unix, not(target_os = "haiku")))]
-pub use unix::*;
-
 #[cfg(windows)]
-pub use windows::*;
+pub use for_windows::*;
 
 #[cfg(any(target_os = "haiku", target_os = "hermit", not(any(unix, windows))))]
-mod custom {
-    pub unsafe fn setup(_build: &mut crate::Build) {}
-}
+pub unsafe fn setup(_build: &mut crate::Build) {}
 
 #[cfg(all(unix, not(target_os = "haiku")))]
-mod unix {
-    pub unsafe fn setup(build: &mut crate::Build) {
-        if build.config.low_priority {
-            libc::setpriority(libc::PRIO_PGRP as _, 0, 10);
-        }
+pub unsafe fn setup(build: &mut crate::Build) {
+    if build.config.low_priority {
+        libc::setpriority(libc::PRIO_PGRP as _, 0, 10);
     }
 }
 
 #[cfg(windows)]
-mod windows {
+mod for_windows {
     //! Job management on Windows for bootstrapping
     //!
     //! Most of the time when you're running a build system (e.g., make) you expect