Remove some dead code

Author: link2xt

src/receive_imf.rs

@@ -2186,9 +2186,6 @@ async fn apply_group_changes(
     let is_from_in_chat =
         !chat_contacts.contains(&ContactId::SELF) || chat_contacts.contains(&from_id);
 
-    // Whether to rebuild the member list from scratch.
-    let recreate_member_list = self_added;
-
     if mime_parser.get_header(HeaderDef::ChatVerified).is_some() {
         if let VerifiedEncryption::NotVerified(err) = verified_encryption {
             warn!(context, "Verification problem: {err:#}.");
@@ -2348,7 +2345,7 @@ async fn apply_group_changes(
         let mut added_ids = HashSet::<ContactId>::new();
         let mut removed_ids = HashSet::<ContactId>::new();
 
-        if !recreate_member_list {
+        if !self_added {
             if mime_parser.get_header(HeaderDef::ChatVersion).is_none() {
                 // Allow non-Delta Chat MUAs to add members.
                 added_ids = new_members.difference(&chat_contacts).copied().collect();
@@ -2366,25 +2363,6 @@ async fn apply_group_changes(
         if let Some(removed_id) = removed_id {
             new_members.remove(&removed_id);
         }
-        if recreate_member_list {
-            if self_added {
-                // ... then `better_msg` is already set.
-            } else if chat.blocked == Blocked::Request || !chat_contacts.contains(&ContactId::SELF)
-            {
-                warn!(context, "Implicit addition of SELF to chat {chat_id}.");
-                group_changes_msgs.push(
-                    stock_str::msg_add_member_local(
-                        context,
-                        &context.get_primary_self_addr().await?,
-                        ContactId::UNDEFINED,
-                    )
-                    .await,
-                );
-            } else {
-                added_ids = new_members.difference(&chat_contacts).copied().collect();
-                removed_ids = chat_contacts.difference(&new_members).copied().collect();
-            }
-        }
 
         if let Some(added_id) = added_id {
             added_ids.remove(&added_id);