feat(identity): explicit revocation

Closes #14 (closed)

pallets/duniter-wot/src/lib.rs

@@ -275,7 +275,16 @@ impl<T: Config<I>, I: 'static> pallet_identity::traits::OnIdtyChange<T> for Pall
             }
             IdtyEvent::Confirmed => {}
             IdtyEvent::Validated => {}
-            IdtyEvent::Removed => {}
+            IdtyEvent::Removed => {
+                if let Err(e) = pallet_membership::Pallet::<T, I>::revoke_membership(
+                    RawOrigin::Root.into(),
+                    Some(idty_index),
+                ) {
+                    sp_std::if_std! {
+                        println!("fail to revoke membership: {:?}", e)
+                    }
+                }
+            }
         }
         0
     }