Enable single-use-lifetimes rustc lint

Removes superfluous lifetime definitions. Simplifying the code

3 files changed, 3 insertions, 3 deletions

diff --git a/mullvad-cli/src/cmds/api_access.rs b/mullvad-cli/src/cmds/api_access.rs
index e88de45f61..6c41850784 100644
--- a/mullvad-cli/src/cmds/api_access.rs
+++ b/mullvad-cli/src/cmds/api_access.rs
@@ -439,7 +439,7 @@ mod pp {
         }
     }
 
-    impl<'a> std::fmt::Display for ApiAccessMethodFormatter<'a> {
+    impl std::fmt::Display for ApiAccessMethodFormatter<'_> {
         fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
             let write_status = |f: &mut std::fmt::Formatter<'_>, enabled: bool| {
                 if enabled {
diff --git a/mullvad-cli/src/cmds/custom_list.rs b/mullvad-cli/src/cmds/custom_list.rs
index c1ab653a0d..47e48c0c5f 100644
--- a/mullvad-cli/src/cmds/custom_list.rs
+++ b/mullvad-cli/src/cmds/custom_list.rs
@@ -216,7 +216,7 @@ impl<'a> GeographicLocationConstraintFormatter<'a> {
     }
 }
 
-impl<'a> std::fmt::Display for GeographicLocationConstraintFormatter<'a> {
+impl std::fmt::Display for GeographicLocationConstraintFormatter<'_> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
         let unwrap_country = |country: Option<String>, constraint: &str| {
             country.unwrap_or(format!("{constraint} <invalid country>"))
diff --git a/mullvad-cli/src/cmds/proxies.rs b/mullvad-cli/src/cmds/proxies.rs
index 68ab1c036c..b1fc2b6f3a 100644
--- a/mullvad-cli/src/cmds/proxies.rs
+++ b/mullvad-cli/src/cmds/proxies.rs
@@ -182,7 +182,7 @@ pub mod pp {
         pub custom_proxy: &'a CustomProxy,
     }
 
-    impl<'a> std::fmt::Display for CustomProxyFormatter<'a> {
+    impl std::fmt::Display for CustomProxyFormatter<'_> {
         fn fmt(&self, _: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
             match self.custom_proxy {
                 CustomProxy::Shadowsocks(shadowsocks) => {