Temporarily remove future compatibility label from migration lint

The lint is unstable, and the lint group `rust_2024_compatibility` must keep working on stable

Author: Jules-Bertholet

compiler/rustc_lint_defs/src/builtin.rs

@@ -1657,10 +1657,11 @@ declare_lint! {
     Allow,
     "detects `mut x` bindings that change the type of `x`",
     @feature_gate = sym::mut_dont_reset_binding_mode_2024;
-    @future_incompatible = FutureIncompatibleInfo {
+    // FIXME uncomment below upon stabilization
+    /*@future_incompatible = FutureIncompatibleInfo {
         reason: FutureIncompatibilityReason::EditionSemanticsChange(Edition::Edition2024),
         reference: "123076",
-    };
+    };*/
 }
 
 declare_lint! {

tests/ui/pattern/mut_dont_reset_binding_mode_2024_lint.rs

@@ -8,11 +8,9 @@ struct Foo(u8);
 fn main() {
     let Foo(mut a) = &Foo(0);
     //~^ ERROR: dereferencing `mut` binding
-    //~| WARN: this changes meaning in Rust 2024
     a = 42;
 
     let Foo(mut a) = &mut Foo(0);
     //~^ ERROR: dereferencing `mut` binding
-    //~| WARN: this changes meaning in Rust 2024
     a = 42;
 }

tests/ui/pattern/mut_dont_reset_binding_mode_2024_lint.stderr

@@ -4,8 +4,6 @@ error: dereferencing `mut` binding
 LL |     let Foo(mut a) = &Foo(0);
    |             ^^^^^ `mut` dereferences the type of this binding
    |
-   = warning: this changes meaning in Rust 2024
-   = note: for more information, see 123076
 help: this will change in edition 2024
   --> $DIR/mut_dont_reset_binding_mode_2024_lint.rs:9:13
    |
@@ -18,15 +16,13 @@ LL | #![forbid(dereferencing_mut_binding)]
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: dereferencing `mut` binding
-  --> $DIR/mut_dont_reset_binding_mode_2024_lint.rs:14:13
+  --> $DIR/mut_dont_reset_binding_mode_2024_lint.rs:13:13
    |
 LL |     let Foo(mut a) = &mut Foo(0);
    |             ^^^^^ `mut` dereferences the type of this binding
    |
-   = warning: this changes meaning in Rust 2024
-   = note: for more information, see 123076
 help: this will change in edition 2024
-  --> $DIR/mut_dont_reset_binding_mode_2024_lint.rs:14:13
+  --> $DIR/mut_dont_reset_binding_mode_2024_lint.rs:13:13
    |
 LL |     let Foo(mut a) = &mut Foo(0);
    |             ^^^^^