fix clippy warnings

taskchampion/src/server/remote.rs

@@ -1,7 +1,6 @@
 use crate::server::{AddVersionResult, GetVersionResult, HistorySegment, Server, VersionId};
 use failure::{format_err, Fallible};
 use std::io::Read;
-use ureq;
 use uuid::Uuid;
 
 pub struct RemoteServer {

taskchampion/src/task.rs

@@ -151,9 +151,7 @@ impl Task {
     pub fn is_active(&self) -> bool {
         self.taskmap
             .iter()
-            .filter(|(k, v)| k.starts_with("start.") && v.is_empty())
-            .next()
-            .is_some()
+            .any(|(k, v)| k.starts_with("start.") && v.is_empty())
     }
 
     pub fn get_modified(&self) -> Option<DateTime<Utc>> {