[librsvg: 2/4] Don't derive(Clone) for PaintSource now that it is not cloned

[Marge Bot <marge-bot src gnome org>]

commit 0b107efdbc72ab284c9c5b3b0122e37b8572e560
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Sep 21 17:25:30 2022 -0500

    Don't derive(Clone) for PaintSource now that it is not cloned
    
    Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/750>

 src/paint_server.rs | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/src/paint_server.rs b/src/paint_server.rs
index 2395aee98..e9832bd30 100644
--- a/src/paint_server.rs
+++ b/src/paint_server.rs
@@ -50,7 +50,6 @@ pub enum PaintServer {
 ///
 /// Use [`PaintSource.to_user_space`](#method.to_user_space) to turn this into a
 /// [`UserSpacePaintSource`].
-#[derive(Clone)]
 pub enum PaintSource {
     None,
     Gradient(ResolvedGradient, Option<cssparser::RGBA>),