Replace util::geometry::rect_contains_point in favor of Rect::contains

[frewsxcv]

Remove

servo/components/util/geometry.rs

Lines 89 to 97 in 2be60be

	/// Returns true if the rect contains the given point. Points on the top or left sides of the rect
	/// are considered inside the rectangle, while points on the right or bottom sides of the rect are
	/// not considered inside the rectangle.
	pub fn rect_contains_point<T>(rect: Rect<T>, point: Point2D<T>) -> bool
	where T: PartialOrd + Add<T, Output=T>
	{
	point.x >= rect.origin.x && point.x < rect.origin.x + rect.size.width &&
	point.y >= rect.origin.y && point.y < rect.origin.y + rect.size.height
	}

Replace usages with http://doc.servo.org/euclid/rect/struct.Rect.html#method.contains