Remove unused code.

src/utils/lib.h

@@ -440,22 +440,6 @@ static inline bool is_power_of_two(uint64_t x)
 	return x != 0 && (x & (x - 1)) == 0;
 }
 
-static int clz(uint64_t num)
-{
-#if IS_CLANG || IS_GCC
-	return (int)__builtin_ctzll(num);
-#else
-	unsigned long index;
-	_BitScanReverse64(&index, (__int64)num);
-	return (int)index;
-#endif
-}
-
-static inline unsigned char power_of_2(uint64_t pot_value)
-{
-	return 64 - clz(pot_value);
-}
-
 static inline uint32_t next_highest_power_of_2(uint32_t v)
 {
 	v--;