chore(clippy): make clippy happy (#1888)

ethers-contract/src/contract.rs

@@ -195,7 +195,7 @@ impl<M: Middleware> Contract<M> {
     /// Returns an [`Event`](crate::builders::Event) builder for the provided event.
     /// This function operates in a static context, then it does not require a `self`
     /// to reference to instantiate an [`Event`](crate::builders::Event) builder.
-    pub fn event_of_type<'a, D: EthEvent>(client: &'a Arc<M>) -> Event<'a, M, D> {
+    pub fn event_of_type<D: EthEvent>(client: &Arc<M>) -> Event<M, D> {
         Event {
             provider: client,
             filter: Filter::new().event(&D::abi_signature()),