diff --git a/core/themes/stable9/css/core/normalize-fixes.css b/core/themes/stable9/css/core/normalize-fixes.css
deleted file mode 100644
index 0845eebf286decbebe0637842e8d50c883ecebc2..0000000000000000000000000000000000000000
--- a/core/themes/stable9/css/core/normalize-fixes.css
+++ /dev/null
@@ -1,40 +0,0 @@
-/**
- * @file
- * Fixes for core/assets/vendor/normalize-css/normalize.css since version 8.0.1.
- */
-
-/**
- * Add SVG styling for IE that was mistakenly removed from normalize.css in
- * 8.0.0.
- */
-svg:not(:root) {
-  overflow: hidden;
-}
-
-/**
- * Prevent regression due to normalize.css no longer hiding the cancel search
- * button in 8.0.0.
- * @todo Remove this rule in https://drupal.org/node/3114878
- */
-input[type="search"]::-webkit-search-cancel-button {
-  -webkit-appearance: none;
-}
-
-/**
- * Prevent IE11 and Edge <summary> elements from being displayed as list-item.
- * due to a rule added in normalize.css 5.0.0. For browsers that support
- * <summary>, this is the correct styling. For IE11 and Edge, which do not
- * support this element, this results in an unwanted list-item bullet.
- */
-/* Target IE11 */
-@media screen and (-ms-high-contrast: active), (-ms-high-contrast: none) {
-  summary {
-    display: block;
-  }
-}
-/* Target Edge */
-@supports (-ms-ime-align:auto) {
-  summary {
-    display: block;
-  }
-}
diff --git a/core/themes/stable9/stable9.libraries.yml b/core/themes/stable9/stable9.libraries.yml
index d905a49a3eb722b5ce1432f292899a72a2bbd486..828fdd4aa16d91273f312cc90be2096c72d3dc45 100644
--- a/core/themes/stable9/stable9.libraries.yml
+++ b/core/themes/stable9/stable9.libraries.yml
@@ -8,7 +8,6 @@ normalize:
   css:
     base:
       css/core/assets/vendor/normalize-css/normalize.css: { weight: -20 }
-      css/core/normalize-fixes.css: { weight: -19 }
 
 tour:
   version: VERSION