remove internalNew from system (#23475)

changelog.md

@@ -13,6 +13,7 @@
   (a, b) = (1, 2, 3, 4)
   ```
   will no longer compile.
+- `internalNew` is removed from system, use `new` instead.
 
 ## Standard library additions and changes
 

lib/system.nim

@@ -125,9 +125,6 @@ proc unsafeAddr*[T](x: T): ptr T {.magic: "Addr", noSideEffect.} =
 
 const ThisIsSystem = true
 
-proc internalNew*[T](a: var ref T) {.magic: "New", noSideEffect.}
-  ## Leaked implementation detail. Do not use.
-
 proc new*[T](a: var ref T, finalizer: proc (x: ref T) {.nimcall.}) {.
   magic: "NewFinalize", noSideEffect.}
   ## Creates a new object of type `T` and returns a safe (traced)