remove rust_beta_channel feature

- the msrv (i.e. rust-version in Cargo.toml) is high enough that all gated code can now be used on stabe

Cargo.toml

@@ -22,7 +22,6 @@ repl = ["dep:crossterm", "dep:ctrlc", "dep:rustyline"]
 hostname = ["dep:hostname"]
 tls = ["dep:native-tls"]
 http = ["dep:warp", "dep:reqwest"]
-rust_beta_channel = []
 crypto-full = []
 
 [build-dependencies]

src/arena.rs

@@ -56,20 +56,9 @@ const F64_TABLE_ALIGN: usize = 8;
 
 #[inline(always)]
 fn global_f64table() -> &'static RwLock<Weak<F64Table>> {
-    #[cfg(feature = "rust_beta_channel")]
+    static GLOBAL_ATOM_TABLE: RwLock<Weak<F64Table>> = RwLock::new(Weak::new());
-    {
-        // const Weak::new will be stabilized in 1.73 which is currently in beta,
-        // till then we need a OnceLock for initialization
-        static GLOBAL_ATOM_TABLE: RwLock<Weak<F64Table>> = RwLock::const_new(Weak::new());
     &GLOBAL_ATOM_TABLE
 }
-    #[cfg(not(feature = "rust_beta_channel"))]
-    {
-        use std::sync::OnceLock;
-        static GLOBAL_ATOM_TABLE: OnceLock<RwLock<Weak<F64Table>>> = OnceLock::new();
-        GLOBAL_ATOM_TABLE.get_or_init(|| RwLock::new(Weak::new()))
-    }
-}
 
 impl RawBlockTraits for F64Table {
     #[inline]

src/atom_table.rs

@@ -56,20 +56,9 @@ const ATOM_TABLE_ALIGN: usize = 8;
 
 #[inline(always)]
 fn global_atom_table() -> &'static RwLock<Weak<AtomTable>> {
-    #[cfg(feature = "rust_beta_channel")]
+    static GLOBAL_ATOM_TABLE: RwLock<Weak<AtomTable>> = RwLock::new(Weak::new());
-    {
-        // const Weak::new will be stabilized in 1.73 which is currently in beta,
-        // till then we need a OnceLock for initialization
-        static GLOBAL_ATOM_TABLE: RwLock<Weak<AtomTable>> = RwLock::const_new(Weak::new());
     &GLOBAL_ATOM_TABLE
 }
-    #[cfg(not(feature = "rust_beta_channel"))]
-    {
-        use std::sync::OnceLock;
-        static GLOBAL_ATOM_TABLE: OnceLock<RwLock<Weak<AtomTable>>> = OnceLock::new();
-        GLOBAL_ATOM_TABLE.get_or_init(|| RwLock::new(Weak::new()))
-    }
-}
 
 #[inline(always)]
 fn arc_atom_table() -> Option<Arc<AtomTable>> {