1 files changed, 0 insertions, 9 deletions
diff --git a/thread_win32.h b/thread_win32.h
index c44fd91f2d..60083da0a1 100644
--- a/thread_win32.h
+++ b/thread_win32.h
@@ -12,8 +12,6 @@
 #ifndef RUBY_THREAD_WIN32_H
 #define RUBY_THREAD_WIN32_H
 
-#include <windows.h>
-
 # ifdef __CYGWIN__
 # undef _WIN32
 # endif
@@ -21,13 +19,6 @@
 WINBASEAPI BOOL WINAPI
 TryEnterCriticalSection(IN OUT LPCRITICAL_SECTION lpCriticalSection);
 
-typedef HANDLE rb_nativethread_id_t;
-
-typedef union rb_thread_lock_union {
-    HANDLE mutex;
-    CRITICAL_SECTION crit;
-} rb_nativethread_lock_t;
-
 typedef struct rb_thread_cond_struct {
     struct cond_event_entry *next;
     struct cond_event_entry *prev;