Remove feature gate directives for `if_let`, `while_let`, and `tuple_indexing`.
@@ -2548,10 +2548,6 @@ The currently implemented features of the reference compiler are:
* `default_type_params` - Allows use of default type parameters. The future of
this feature is uncertain.
-* `if_let` - Allows use of the `if let` syntax.
-
-* `while_let` - Allows use of the `while let` syntax.
-
* `intrinsics` - Allows use of the "rust-intrinsics" ABI. Compiler intrinsics
are inherently unstable and no promise about them is made.
@@ -2638,8 +2634,6 @@ The currently implemented features of the reference compiler are:
which is considered wildly unsafe and will be
obsoleted by language improvements.
-* `tuple_indexing` - Allows use of tuple indexing (expressions like `expr.0`)
-
* `associated_types` - Allows type aliases in traits. Experimental.
If a feature is promoted to a language feature, then all existing programs will
