chore: remove unused Default requirement in Table generics (#6551)

crates/storage/db/benches/criterion.rs

@@ -54,7 +54,7 @@ pub fn serialization(c: &mut Criterion) {
 /// Measures `Encode`, `Decode`, `Compress` and `Decompress`.
 fn measure_table_serialization<T>(group: &mut BenchmarkGroup<'_, WallTime>)
 where
-    T: Table + Default,
+    T: Table,
     T::Key: Default + Clone + for<'de> serde::Deserialize<'de>,
     T::Value: Default + Clone + for<'de> serde::Deserialize<'de>,
 {
@@ -119,7 +119,7 @@ where
 /// Measures `SeqWrite`, `RandomWrite`, `SeqRead` and `RandomRead` using `cursor` and `tx.put`.
 fn measure_table_db<T>(group: &mut BenchmarkGroup<'_, WallTime>)
 where
-    T: Table + Default,
+    T: Table,
     T::Key: Default + Clone + for<'de> serde::Deserialize<'de>,
     T::Value: Default + Clone + for<'de> serde::Deserialize<'de>,
 {
@@ -215,7 +215,7 @@ where
 /// Measures `SeqWrite`, `RandomWrite` and `SeqRead`  using `cursor_dup` and `tx.put`.
 fn measure_dupsort_db<T>(group: &mut BenchmarkGroup<'_, WallTime>)
 where
-    T: Table + Default + DupSort,
+    T: Table + DupSort,
     T::Key: Default + Clone + for<'de> serde::Deserialize<'de>,
     T::Value: Default + Clone + for<'de> serde::Deserialize<'de>,
     T::SubKey: Default + Clone + for<'de> serde::Deserialize<'de>,

crates/storage/db/benches/hash_keys.rs

@@ -40,7 +40,7 @@ pub fn hash_keys(c: &mut Criterion) {
 
 fn measure_table_insertion<T>(group: &mut BenchmarkGroup<'_, WallTime>, size: usize)
 where
-    T: Table + Default,
+    T: Table,
     T::Key: Default
         + Clone
         + for<'de> serde::Deserialize<'de>
@@ -132,7 +132,7 @@ where
 #[allow(clippy::type_complexity)]
 fn generate_batches<T>(size: usize) -> (Vec<TableRow<T>>, Vec<TableRow<T>>)
 where
-    T: Table + Default,
+    T: Table,
     T::Key: std::hash::Hash + Arbitrary,
     T::Value: Arbitrary,
 {
@@ -159,7 +159,7 @@ where
 
 fn append<T>(db: DatabaseEnv, input: Vec<(<T as Table>::Key, <T as Table>::Value)>) -> DatabaseEnv
 where
-    T: Table + Default,
+    T: Table,
 {
     {
         let tx = db.tx_mut().expect("tx");
@@ -177,7 +177,7 @@ where
 
 fn insert<T>(db: DatabaseEnv, input: Vec<(<T as Table>::Key, <T as Table>::Value)>) -> DatabaseEnv
 where
-    T: Table + Default,
+    T: Table,
 {
     {
         let tx = db.tx_mut().expect("tx");
@@ -195,7 +195,7 @@ where
 
 fn put<T>(db: DatabaseEnv, input: Vec<(<T as Table>::Key, <T as Table>::Value)>) -> DatabaseEnv
 where
-    T: Table + Default,
+    T: Table,
 {
     {
         let tx = db.tx_mut().expect("tx");
@@ -223,7 +223,7 @@ struct TableStats {
 
 fn get_table_stats<T>(db: DatabaseEnv)
 where
-    T: Table + Default,
+    T: Table,
 {
     db.view(|tx| {
         let table_db = tx.inner.open_db(Some(T::NAME)).map_err(|_| "Could not open db.").unwrap();

crates/storage/db/benches/utils.rs

@@ -20,7 +20,6 @@ const RANDOM_INDEXES: [usize; 10] = [23, 2, 42, 5, 3, 99, 54, 0, 33, 64];
 #[allow(dead_code)]
 pub(crate) fn load_vectors<T: Table>() -> Vec<(T::Key, Bytes, T::Value, Bytes)>
 where
-    T: Default,
     T::Key: Default + Clone + for<'de> serde::Deserialize<'de>,
     T::Value: Default + Clone + for<'de> serde::Deserialize<'de>,
 {
@@ -54,7 +53,7 @@ pub(crate) fn set_up_db<T>(
     pair: &Vec<(<T as Table>::Key, Bytes, <T as Table>::Value, Bytes)>,
 ) -> DatabaseEnv
 where
-    T: Table + Default,
+    T: Table,
     T::Key: Default + Clone,
     T::Value: Default + Clone,
 {

crates/storage/db/src/implementation/mdbx/mod.rs

@@ -122,7 +122,7 @@ impl DatabaseMetrics for DatabaseEnv {
 
         let _ = self
             .view(|tx| {
-                for table in Tables::ALL.iter().map(|table| table.name()) {
+                for table in Tables::ALL.iter().map(Tables::name) {
                     let table_db = tx.inner.open_db(Some(table)).wrap_err("Could not open db.")?;
 
                     let stats = tx