diff --git a/src/cdk/overlay/_index-deprecated.scss b/src/cdk/overlay/_index-deprecated.scss
deleted file mode 100644
index 672913169d7b..000000000000
--- a/src/cdk/overlay/_index-deprecated.scss
+++ /dev/null
@@ -1,13 +0,0 @@
-@use './index' as overlay;
-
-// @deprecated Use `$overlay-container-z-index`.
-$z-index-overlay-container: overlay.$overlay-container-z-index;
-
-// @deprecated Use `$overlay-z-index`.
-$z-index-overlay: overlay.$overlay-z-index;
-
-// @deprecated Use `$overlay-backdrop-color`.
-$dark-backdrop-background: overlay.$overlay-backdrop-color;
-
-// @deprecated Use `$overlay-backdrop-z-index`.
-$z-index-overlay-backdrop: overlay.$overlay-backdrop-z-index;