diff --git a/library/std/src/sys/sync/rwlock/mod.rs b/library/std/src/sys/sync/rwlock/mod.rs
index 675931c64bd..70ba6bf38ef 100644
--- a/library/std/src/sys/sync/rwlock/mod.rs
+++ b/library/std/src/sys/sync/rwlock/mod.rs
@@ -12,24 +12,20 @@ cfg_if::cfg_if! {
     ))] {
         mod futex;
         pub use futex::RwLock;
-    } else if #[cfg(target_family = "unix")] {
+    } else if #[cfg(any(
+        target_family = "unix",
+        all(target_os = "windows", target_vendor = "win7"),
+        all(target_vendor = "fortanix", target_env = "sgx"),
+        target_os = "xous",
+    ))] {
         mod queue;
         pub use queue::RwLock;
-    } else if #[cfg(all(target_os = "windows", target_vendor = "win7"))] {
-        mod windows7;
-        pub use windows7::RwLock;
-    } else if #[cfg(all(target_vendor = "fortanix", target_env = "sgx"))] {
-        mod sgx;
-        pub use sgx::RwLock;
     } else if #[cfg(target_os = "solid_asp3")] {
         mod solid;
         pub use solid::RwLock;
     } else if #[cfg(target_os = "teeos")] {
         mod teeos;
         pub use teeos::RwLock;
-    } else if #[cfg(target_os = "xous")] {
-        mod xous;
-        pub use xous::RwLock;
     } else {
         mod no_threads;
         pub use no_threads::RwLock;
diff --git a/library/std/src/sys/sync/rwlock/windows7.rs b/library/std/src/sys/sync/rwlock/windows7.rs
deleted file mode 100644
index e69415baac4..00000000000
--- a/library/std/src/sys/sync/rwlock/windows7.rs
+++ /dev/null
@@ -1,40 +0,0 @@
-use crate::cell::UnsafeCell;
-use crate::sys::c;
-
-pub struct RwLock {
-    inner: UnsafeCell<c::SRWLOCK>,
-}
-
-unsafe impl Send for RwLock {}
-unsafe impl Sync for RwLock {}
-
-impl RwLock {
-    #[inline]
-    pub const fn new() -> RwLock {
-        RwLock { inner: UnsafeCell::new(c::SRWLOCK_INIT) }
-    }
-    #[inline]
-    pub fn read(&self) {
-        unsafe { c::AcquireSRWLockShared(self.inner.get()) }
-    }
-    #[inline]
-    pub fn try_read(&self) -> bool {
-        unsafe { c::TryAcquireSRWLockShared(self.inner.get()) != 0 }
-    }
-    #[inline]
-    pub fn write(&self) {
-        unsafe { c::AcquireSRWLockExclusive(self.inner.get()) }
-    }
-    #[inline]
-    pub fn try_write(&self) -> bool {
-        unsafe { c::TryAcquireSRWLockExclusive(self.inner.get()) != 0 }
-    }
-    #[inline]
-    pub unsafe fn read_unlock(&self) {
-        c::ReleaseSRWLockShared(self.inner.get())
-    }
-    #[inline]
-    pub unsafe fn write_unlock(&self) {
-        c::ReleaseSRWLockExclusive(self.inner.get())
-    }
-}