Revert "Add set_inheritable for Windows Handles"

This reverts commit b89b056.

Author: Mark-Simulacrum

library/std/src/os/windows/io/handle.rs

@@ -204,18 +204,6 @@ impl OwnedHandle {
         })?;
         unsafe { Ok(Self::from_raw_handle(ret)) }
     }
-
-    /// Allow child processes to inherit the handle.
-    pub(crate) fn set_inheritable(&self) -> io::Result<()> {
-        cvt(unsafe {
-            c::SetHandleInformation(
-                self.as_raw_handle(),
-                c::HANDLE_FLAG_INHERIT,
-                c::HANDLE_FLAG_INHERIT,
-            )
-        })?;
-        Ok(())
-    }
 }
 
 impl TryFrom<HandleOrInvalid> for OwnedHandle {

library/std/src/sys/windows/handle.rs

@@ -221,10 +221,6 @@ impl Handle {
         Ok(Self(self.0.duplicate(access, inherit, options)?))
     }
 
-    pub(crate) fn set_inheritable(&self) -> io::Result<()> {
-        self.0.set_inheritable()
-    }
-
     /// Performs a synchronous read.
     ///
     /// If the handle is opened for asynchronous I/O then this abort the process.