diff --git a/racket/collects/unstable/syntax.rkt b/racket/collects/unstable/syntax.rkt
deleted file mode 100644
index eda0e336de..0000000000
--- a/racket/collects/unstable/syntax.rkt
+++ /dev/null
@@ -1,64 +0,0 @@
-#lang racket/base
-;; owner: ryanc (and cce and stamourv, where noted)
-(require racket/syntax
-         (for-syntax racket/base)
-         (for-template racket/base)
-         syntax/transformer ; for re-export
-         syntax/location) ; for re-export
-
-(provide ;; by endobson
-         syntax-length
-
-         ;; by stamourv:
-         format-unique-id
-         syntax-within?
-
-         ;; by ryanc
-         explode-module-path-index
-         phase-of-enclosing-module
-
-         ;; re-export, for backwards compatibility
-         make-variable-like-transformer
-         syntax-source-file-name
-         syntax-source-directory)
-
-;; by stamourv:
-
-(define (format-unique-id lctx
-                          #:source [src #f]
-                          #:props [props #f]
-                          #:cert [cert #f]
-                          fmt . args)
-  ((make-syntax-introducer) (apply format-id
-                                   lctx #:source src #:props props #:cert cert
-                                   fmt args)))
-
-;; is syntax a contained within syntax b, inclusively
-(define (syntax-within? a b)
-  (let ([pos-a  (syntax-position a)]
-        [span-a (syntax-span a)]
-        [pos-b  (syntax-position b)]
-        [span-b (syntax-span b)])
-    (and pos-a span-a pos-b span-b
-         (<= pos-b pos-a)
-         (>= (+ pos-b span-b) (+ pos-a span-a)))))
-
-
-;; by ryanc
-
-(define (explode-module-path-index mpi)
-  (let-values ([(x y) (module-path-index-split mpi)])
-    (cons x
-          (if (module-path-index? y)
-              (explode-module-path-index y)
-              (list y)))))
-
-(define-syntax-rule (phase-of-enclosing-module)
-  (variable-reference->module-base-phase
-   (#%variable-reference)))
-
-;; by endobson
-
-(define (syntax-length stx)
-  (let ((list (syntax->list stx)))
-    (and list (length list))))