Minor cleanup in the `line_segment` module
//! Line segment types, optimized with SIMD.
use crate::transform2d::Matrix2x2F;
-use crate::vector::{Vector2F, vec2f};
use crate::util;
+use crate::vector::{Vector2F, vec2f};
use pathfinder_simd::default::F32x4;
use std::ops::{Add, Mul, MulAssign, Sub};
