graph/path/dynamic: remove unnecessary nolint comment
The golangci-lint staticcheck version has been updated and now correctly runs the
SA4000 lint check on arrays of float.
@@ -422,7 +422,6 @@ type key [2]float64
// badKey is a poisoned key. Testing for a bad key uses NaN inequality.
var badKey = key{math.NaN(), math.NaN()}
-//nolint:staticcheck
func (k key) isBadKey() bool { return k != k }
// less returns whether k is less than other. From ISBN:0-262-51129-0 pp476-483:
