Get rid of clone_into as we know our time is Copy

Author: nakedible

crates/bevy_time/src/fixed.rs

@@ -168,9 +168,10 @@ pub fn run_fixed_update_schedule(
     // Run the schedule until we run out of accumulated time
     let _ = world.try_schedule_scope(FixedUpdate, |world, schedule| {
         while world.resource_mut::<Time<Fixed>>().expend() {
-            world.resource::<Time<Fixed>>().as_generic().clone_into(world.resource_mut::<Time>().as_mut());
+            *world.resource_mut::<Time>() = world.resource::<Time<Fixed>>().as_generic();
             schedule.run(world);
         }
     });
-    world.resource::<Time<Virtual>>().as_generic().clone_into(world.resource_mut::<Time>().as_mut());
+
+    *world.resource_mut::<Time>() = world.resource::<Time<Virtual>>().as_generic();
 }

crates/bevy_time/src/virt.rs

@@ -241,5 +241,5 @@ pub fn virtual_time_system(
     };
     virt.context_mut().effective_speed = effective_speed;
     virt.advance_by(delta);
-    virt.as_generic().clone_into(current.as_mut());
+    *current = virt.as_generic();
 }