Buddy: fix cramlimit_bits()

The other assertion is what we actually mean:

The log2up(sz) must be at least bits, otherwise it makes no sense.

src/buddy.c

@@ -203,7 +203,6 @@ BUDDYF(cramlimit_bits)(size_t sz, int8_t cram, int8_t bits)
 {
 	int8_t up;
 
-	assert(sz >= (size_t)1 << bits);
 	if (cram == 0)
 		return (cram);
 	up = (int8_t)(uint8_t)log2up(sz);