primary_selection: don't drop the offer automatically

When clients will try to access the offer on the primary selection
device, it'll automatically close it.

src/primary_selection/offer.rs

@@ -10,7 +10,7 @@ use crate::data_device_manager::ReadPipe;
 
 use super::PrimarySelectionManagerState;
 
-/// RAII wrapper around the [`ZwpPrimarySelectionOfferV1`].
+/// Wrapper around the [`ZwpPrimarySelectionOfferV1`].
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct PrimarySelectionOffer {
     pub(crate) offer: ZwpPrimarySelectionOfferV1,
@@ -54,12 +54,6 @@ impl PrimarySelectionOffer {
     }
 }
 
-impl Drop for PrimarySelectionOffer {
-    fn drop(&mut self) {
-        self.offer.destroy();
-    }
-}
-
 impl<State> Dispatch<ZwpPrimarySelectionOfferV1, PrimarySelectionOfferData, State>
     for PrimarySelectionManagerState
 where