Remove __DECLARE_SEMAPHORE_GENERIC

There are no users of __DECLARE_SEMAPHORE_GENERIC in the kernel
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>

include/linux/semaphore.h

@@ -26,10 +26,8 @@ struct semaphore {
 	.wait_list	= LIST_HEAD_INIT((name).wait_list),		\
 }
 
-#define __DECLARE_SEMAPHORE_GENERIC(name, count) \
-	struct semaphore name = __SEMAPHORE_INITIALIZER(name, count)
-
-#define DECLARE_MUTEX(name)	__DECLARE_SEMAPHORE_GENERIC(name, 1)
+#define DECLARE_MUTEX(name)	\
+	struct semaphore name = __SEMAPHORE_INITIALIZER(name, 1)
 
 static inline void sema_init(struct semaphore *sem, int val)
 {