crypto: Remove some dead key requests code for now.

matrix_sdk_crypto/src/key_request.rs

@@ -321,17 +321,6 @@ impl KeyRequestMachine {
 
         Ok(())
     }
-
-    fn handle_incoming_key_request(&self, event: &ToDeviceEvent<RoomKeyRequestEventContent>) {
-        match event.content.action {
-            Action::Request => todo!(),
-            Action::CancelRequest => todo!(),
-        }
-    }
-
-    fn cancel_request(&self) {
-        todo!()
-    }
 }
 
 #[cfg(test)]

matrix_sdk_crypto/src/lib.rs

@@ -30,7 +30,6 @@
 mod error;
 mod file_encryption;
 mod identities;
-#[allow(dead_code)]
 mod key_request;
 mod machine;
 pub mod olm;