b43: replace limit_value macro with clamp_val

kernel-provided clamp_val is identical, delete the private limit_value helper.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Michael Buesch <mb@bu3sch.de>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/b43/b43.h

@@ -939,22 +939,6 @@ static inline bool __b43_warn_on_dummy(bool x) { return x; }
 # define B43_WARN_ON(x)	__b43_warn_on_dummy(unlikely(!!(x)))
 #endif
 
-/** Limit a value between two limits */
-#ifdef limit_value
-# undef limit_value
-#endif
-#define limit_value(value, min, max)  \
-	({						\
-		typeof(value) __value = (value);	\
-		typeof(value) __min = (min);		\
-		typeof(value) __max = (max);		\
-		if (__value < __min)			\
-			__value = __min;		\
-		else if (__value > __max)		\
-			__value = __max;		\
-		__value;				\
-	})
-
 /* Convert an integer to a Q5.2 value */
 #define INT_TO_Q52(i)	((i) << 2)
 /* Convert a Q5.2 value to an integer (precision loss!) */