remove const_hash feature leftovers

Author: RalfJung

Diff for: core/src/hash/sip.rs

@@ -147,19 +147,17 @@ impl SipHasher {
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     #[deprecated(since = "1.13.0", note = "use `std::hash::DefaultHasher` instead")]
-    #[rustc_const_unstable(feature = "const_hash", issue = "104061")]
     #[must_use]
-    pub const fn new() -> SipHasher {
+    pub fn new() -> SipHasher {
         SipHasher::new_with_keys(0, 0)
     }
 
     /// Creates a `SipHasher` that is keyed off the provided keys.
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     #[deprecated(since = "1.13.0", note = "use `std::hash::DefaultHasher` instead")]
-    #[rustc_const_unstable(feature = "const_hash", issue = "104061")]
     #[must_use]
-    pub const fn new_with_keys(key0: u64, key1: u64) -> SipHasher {
+    pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher {
         SipHasher(SipHasher24 { hasher: Hasher::new_with_keys(key0, key1) })
     }
 }
@@ -169,17 +167,15 @@ impl SipHasher13 {
     #[inline]
     #[unstable(feature = "hashmap_internals", issue = "none")]
     #[deprecated(since = "1.13.0", note = "use `std::hash::DefaultHasher` instead")]
-    #[rustc_const_unstable(feature = "const_hash", issue = "104061")]
-    pub const fn new() -> SipHasher13 {
+    pub fn new() -> SipHasher13 {
         SipHasher13::new_with_keys(0, 0)
     }
 
     /// Creates a `SipHasher13` that is keyed off the provided keys.
     #[inline]
     #[unstable(feature = "hashmap_internals", issue = "none")]
     #[deprecated(since = "1.13.0", note = "use `std::hash::DefaultHasher` instead")]
-    #[rustc_const_unstable(feature = "const_hash", issue = "104061")]
-    pub const fn new_with_keys(key0: u64, key1: u64) -> SipHasher13 {
+    pub fn new_with_keys(key0: u64, key1: u64) -> SipHasher13 {
         SipHasher13 { hasher: Hasher::new_with_keys(key0, key1) }
     }
 }

Diff for: core/src/lib.rs

@@ -122,7 +122,6 @@
 #![feature(const_eval_select)]
 #![feature(const_exact_div)]
 #![feature(const_float_methods)]
-#![feature(const_hash)]
 #![feature(const_heap)]
 #![feature(const_nonnull_new)]
 #![feature(const_num_midpoint)]

Diff for: core/tests/lib.rs

@@ -20,7 +20,6 @@
 #![feature(const_bigint_helper_methods)]
 #![feature(const_black_box)]
 #![feature(const_eval_select)]
-#![feature(const_hash)]
 #![feature(const_heap)]
 #![feature(const_nonnull_new)]
 #![feature(const_num_midpoint)]

Diff for: std/src/hash/random.rs

@@ -105,9 +105,8 @@ impl DefaultHasher {
     #[stable(feature = "hashmap_default_hasher", since = "1.13.0")]
     #[inline]
     #[allow(deprecated)]
-    #[rustc_const_unstable(feature = "const_hash", issue = "104061")]
     #[must_use]
-    pub const fn new() -> DefaultHasher {
+    pub fn new() -> DefaultHasher {
         DefaultHasher(SipHasher13::new_with_keys(0, 0))
     }
 }

Diff for: std/src/lib.rs

@@ -416,7 +416,6 @@
 // Only for const-ness:
 // tidy-alphabetical-start
 #![feature(const_collections_with_hasher)]
-#![feature(const_hash)]
 #![feature(thread_local_internals)]
 // tidy-alphabetical-end
 //