Remove unneeded code now that image libraries use Vec<T>.

src/components/main/compositing/compositor.rs

@@ -757,7 +757,7 @@ impl IOCompositor {
                 width: width as u32,
                 height: height as u32,
                 color_type: png::RGB8,
-                pixels: pixels.move_iter().collect(),
+                pixels: pixels,
             };
             let res = png::store_png(&img, &path);
             assert!(res.is_ok());

src/test/harness/reftest/reftest.rs

@@ -168,7 +168,7 @@ fn check_reftest(reftest: Reftest) {
             width: left.width,
             height: left.height,
             color_type: png::RGBA8,
-            pixels: pixels.move_iter().collect(),
+            pixels: pixels,
         };
         let res = png::store_png(&img, &output);
         assert!(res.is_ok());