Remove unused `gfx-utils`

Cargo.toml

@@ -2,7 +2,6 @@
 members = [
     "demo3",
     "geometry",
-    "gfx-utils",
     "gl",
     "renderer",
     "simd",

gfx-utils/Cargo.toml

@@ -1,7 +0,0 @@
-[package]
-name = "pathfinder_gfx_utils"
-version = "0.2.0"
-authors = ["Patrick Walton <pcwalton@mimiga.net>"]
-
-[dependencies]
-euclid = "0.19"

gfx-utils/src/lib.rs

@@ -1,51 +0,0 @@
-// pathfinder/gfx-utils/lib.rs
-//
-// Copyright © 2018 The Pathfinder Project Developers.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-extern crate euclid;
-
-use euclid::{Point2D, Size2D, Vector2D};
-use std::cmp;
-
-pub struct ShelfBinPacker {
-    next: Point2D<i32>,
-    max_size: Size2D<i32>,
-    padding: Vector2D<i32>,
-    shelf_height: i32,
-}
-
-impl ShelfBinPacker {
-    pub fn new(max_size: &Size2D<i32>, padding: &Vector2D<i32>) -> ShelfBinPacker {
-        ShelfBinPacker {
-            next: padding.to_point(),
-            max_size: *max_size,
-            padding: *padding,
-            shelf_height: 0,
-        }
-    }
-
-    pub fn add(&mut self, size: &Size2D<i32>) -> Result<Point2D<i32>, ()> {
-        let mut next = self.next;
-        let mut lower_right = Point2D::new(next.x + size.width, next.y + size.height) +
-            self.padding;
-        if lower_right.x > self.max_size.width {
-            next = Point2D::new(0, next.y + self.shelf_height);
-            self.shelf_height = 0;
-            lower_right = Point2D::new(size.width, next.y + size.height) + self.padding;
-        }
-        if lower_right.x > self.max_size.width || lower_right.y > self.max_size.height {
-            return Err(())
-        }
-        self.shelf_height = cmp::max(self.shelf_height, size.height);
-        self.next = next + Vector2D::new(size.width + self.padding.x * 2, 0);
-        Ok(next)
-    }
-}
-
-