chore: Remove the criterion function in the benchmarks

It's now equivalent to Criterion::default().

benchmarks/benches/crypto_bench.rs

@@ -285,23 +285,17 @@ pub fn devices_missing_sessions_collecting(c: &mut Criterion) {
     group.finish()
 }
 
-fn criterion() -> Criterion {
-    let criterion = Criterion::default();
-
-    criterion
-}
-
 #[cfg(not(feature = "codspeed"))]
 criterion_group! {
     name = benches;
-    config = criterion();
+    config = Criterion::default();
     targets = keys_query, keys_claiming, room_key_sharing, devices_missing_sessions_collecting,
 }
 
 #[cfg(feature = "codspeed")]
 criterion_group! {
     name = benches;
-    config = criterion();
+    config = Criterion::default();
     targets = keys_query, room_key_sharing, devices_missing_sessions_collecting,
 }
 

benchmarks/benches/event_cache.rs

@@ -133,15 +133,9 @@ fn handle_room_updates(c: &mut Criterion) {
     group.finish()
 }
 
-fn criterion() -> Criterion {
-    let criterion = Criterion::default();
-
-    criterion
-}
-
 criterion_group! {
     name = event_cache;
-    config = criterion();
+    config = Criterion::default();
     targets = handle_room_updates,
 }
 

benchmarks/benches/linked_chunk.rs

@@ -260,15 +260,9 @@ fn reading(c: &mut Criterion) {
     group.finish()
 }
 
-fn criterion() -> Criterion {
-    let criterion = Criterion::default();
-
-    criterion
-}
-
 criterion_group! {
     name = event_cache;
-    config = criterion();
+    config = Criterion::default();
     targets = writing, reading,
 }
 

benchmarks/benches/room_bench.rs

@@ -208,13 +208,9 @@ pub fn load_pinned_events_benchmark(c: &mut Criterion) {
     group.finish();
 }
 
-fn criterion() -> Criterion {
-    Criterion::default()
-}
-
 criterion_group! {
     name = room;
-    config = criterion();
+    config = Criterion::default();
     targets = receive_all_members_benchmark, load_pinned_events_benchmark,
 }
 criterion_main!(room);

benchmarks/benches/store_bench.rs

@@ -10,12 +10,6 @@ use matrix_sdk_sqlite::SqliteStateStore;
 use ruma::{RoomId, device_id, user_id};
 use tokio::runtime::Builder;
 
-fn criterion() -> Criterion {
-    let criterion = Criterion::default();
-
-    criterion
-}
-
 /// Number of joined rooms in the benchmark.
 const NUM_JOINED_ROOMS: usize = 10000;
 
@@ -117,7 +111,7 @@ pub fn restore_session(c: &mut Criterion) {
 
 criterion_group! {
     name = benches;
-    config = criterion();
+    config = Criterion::default();
     targets = restore_session
 }
 criterion_main!(benches);

benchmarks/benches/timeline.rs

@@ -117,13 +117,9 @@ pub fn create_timeline_with_initial_events(c: &mut Criterion) {
     group.finish();
 }
 
-fn criterion() -> Criterion {
-    Criterion::default()
-}
-
 criterion_group! {
     name = room;
-    config = criterion();
+    config = Criterion::default();
     targets = create_timeline_with_initial_events
 }
 criterion_main!(room);