Simplifies some lifetimes

lib/src/repository.rs

@@ -81,16 +81,12 @@ pub trait RepositoryConnection: Clone {
     ///     assert_eq!(results.into_values_iter().next().unwrap().unwrap()[0], Some(ex.into()));
     /// }
     /// ```
-    fn prepare_query<'a>(
-        &'a self,
-        query: &str,
-        options: QueryOptions,
-    ) -> Result<Self::PreparedQuery>;
+    fn prepare_query(&self, query: &str, options: QueryOptions) -> Result<Self::PreparedQuery>;
 
     /// This is similar to `prepare_query`, but useful if a SPARQL query has already been parsed, which is the case when building `ServiceHandler`s for federated queries with `SERVICE` clauses. For examples, look in the tests.
-    fn prepare_query_from_pattern<'a>(
-        &'a self,
-        graph_pattern: &'a GraphPattern,
+    fn prepare_query_from_pattern(
+        &self,
+        graph_pattern: &GraphPattern,
         options: QueryOptions,
     ) -> Result<Self::PreparedQuery>;