chore(ext): remove unneeded explicit lifetime parameter

Author: tottoto

src/ext/mod.rs

@@ -116,7 +116,7 @@ impl HeaderCaseMap {
     /// Returns a view of all spellings associated with that header name,
     /// in the order they were found.
     #[cfg(any(feature = "client", feature = "server"))]
-    pub(crate) fn get_all_internal<'a>(&'a self, name: &HeaderName) -> ValueIter<'_, Bytes> {
+    pub(crate) fn get_all_internal(&self, name: &HeaderName) -> ValueIter<'_, Bytes> {
         self.0.get_all(name).into_iter()
     }