Automate settings registration (#42238)

Release Notes:

- N/A

---------

Co-authored-by: Nia <nia@zed.dev>

crates/project/src/git_store/conflict_set.rs

@@ -268,13 +268,10 @@ mod tests {
         status::{UnmergedStatus, UnmergedStatusCode},
     };
     use gpui::{BackgroundExecutor, TestAppContext};
-    use language::language_settings::AllLanguageSettings;
     use serde_json::json;
-    use settings::Settings as _;
     use text::{Buffer, BufferId, Point, ReplicaId, ToOffset as _};
     use unindent::Unindent as _;
     use util::{path, rel_path::rel_path};
-    use worktree::WorktreeSettings;
 
     #[test]
     fn test_parse_conflicts_in_buffer() {
@@ -488,9 +485,6 @@ mod tests {
         zlog::init_test();
         cx.update(|cx| {
             settings::init(cx);
-            WorktreeSettings::register(cx);
-            Project::init_settings(cx);
-            AllLanguageSettings::register(cx);
         });
         let initial_text = "
             one
@@ -589,9 +583,6 @@ mod tests {
         zlog::init_test();
         cx.update(|cx| {
             settings::init(cx);
-            WorktreeSettings::register(cx);
-            Project::init_settings(cx);
-            AllLanguageSettings::register(cx);
         });
 
         let initial_text = "

crates/project/src/git_store/git_traversal.rs

@@ -688,7 +688,6 @@ mod tests {
         cx.update(|cx| {
             let settings_store = SettingsStore::test(cx);
             cx.set_global(settings_store);
-            Project::init_settings(cx);
         });
     }