diff --git a/packages/mui-utils/src/getDisplayName/getDisplayName.ts b/packages/mui-utils/src/getDisplayName/getDisplayName.ts
index 5290cabeea2e29..ca1b8a81f18fae 100644
--- a/packages/mui-utils/src/getDisplayName/getDisplayName.ts
+++ b/packages/mui-utils/src/getDisplayName/getDisplayName.ts
@@ -18,7 +18,7 @@ function getWrappedName(outerType: any, innerType: any, wrapperName: string) {
 /**
  * cherry-pick from
  * https://github.com/facebook/react/blob/769b1f270e1251d9dbdce0fcbd9e92e502d059b8/packages/shared/getComponentName.js
- * originally forked from recompose/getDisplayName with added IE11 support
+ * originally forked from recompose/getDisplayName
  */
 export default function getDisplayName(Component: React.ElementType): string | undefined {
   if (Component == null) {
diff --git a/packages/mui-utils/src/index.ts b/packages/mui-utils/src/index.ts
index 44d58f355cd99d..d1bad4da657aef 100644
--- a/packages/mui-utils/src/index.ts
+++ b/packages/mui-utils/src/index.ts
@@ -29,10 +29,6 @@ export { default as unstable_useTimeout, Timeout as unstable_Timeout } from './u
 export { default as unstable_useOnMount } from './useOnMount';
 export { default as unstable_useIsFocusVisible } from './useIsFocusVisible';
 export { default as unstable_getScrollbarSize } from './getScrollbarSize';
-export {
-  detectScrollType as unstable_detectScrollType,
-  getNormalizedScrollLeft as unstable_getNormalizedScrollLeft,
-} from './scrollLeft';
 export { default as usePreviousProps } from './usePreviousProps';
 export { default as getValidReactChildren } from './getValidReactChildren';
 export { default as visuallyHidden } from './visuallyHidden';
diff --git a/packages/mui-utils/src/scrollLeft/index.ts b/packages/mui-utils/src/scrollLeft/index.ts
deleted file mode 100644
index 18abe92db3ac16..00000000000000
--- a/packages/mui-utils/src/scrollLeft/index.ts
+++ /dev/null
@@ -1 +0,0 @@
-export * from './scrollLeft';
diff --git a/packages/mui-utils/src/scrollLeft/scrollLeft.d.ts b/packages/mui-utils/src/scrollLeft/scrollLeft.d.ts
deleted file mode 100644
index cd6227f302cf45..00000000000000
--- a/packages/mui-utils/src/scrollLeft/scrollLeft.d.ts
+++ /dev/null
@@ -1,2 +0,0 @@
-export function detectScrollType(): string;
-export function getNormalizedScrollLeft(element: HTMLElement, direction: string): number;
diff --git a/packages/mui-utils/src/scrollLeft/scrollLeft.js b/packages/mui-utils/src/scrollLeft/scrollLeft.js
deleted file mode 100644
index e9998373024ca4..00000000000000
--- a/packages/mui-utils/src/scrollLeft/scrollLeft.js
+++ /dev/null
@@ -1,77 +0,0 @@
-// Source from https://github.com/alitaheri/normalize-scroll-left
-let cachedType;
-
-/**
- * Based on the jquery plugin https://github.com/othree/jquery.rtl-scroll-type
- *
- * Types of scrollLeft, assuming scrollWidth=100 and direction is rtl.
- *
- * Type             | <- Most Left | Most Right -> | Initial
- * ---------------- | ------------ | ------------- | -------
- * default          | 0            | 100           | 100
- * negative (spec*) | -100         | 0             | 0
- * reverse          | 100          | 0             | 0
- *
- * Edge 85: default
- * Safari 14: negative
- * Chrome 85: negative
- * Firefox 81: negative
- * IE11: reverse
- *
- * spec* https://drafts.csswg.org/cssom-view/#dom-window-scroll
- */
-export function detectScrollType() {
-  if (cachedType) {
-    return cachedType;
-  }
-
-  const dummy = document.createElement('div');
-  const container = document.createElement('div');
-  container.style.width = '10px';
-  container.style.height = '1px';
-  dummy.appendChild(container);
-  dummy.dir = 'rtl';
-  dummy.style.fontSize = '14px';
-  dummy.style.width = '4px';
-  dummy.style.height = '1px';
-  dummy.style.position = 'absolute';
-  dummy.style.top = '-1000px';
-  dummy.style.overflow = 'scroll';
-
-  document.body.appendChild(dummy);
-
-  cachedType = 'reverse';
-
-  if (dummy.scrollLeft > 0) {
-    cachedType = 'default';
-  } else {
-    dummy.scrollLeft = 1;
-    if (dummy.scrollLeft === 0) {
-      cachedType = 'negative';
-    }
-  }
-
-  document.body.removeChild(dummy);
-  return cachedType;
-}
-
-// Based on https://stackoverflow.com/a/24394376
-export function getNormalizedScrollLeft(element, direction) {
-  const scrollLeft = element.scrollLeft;
-
-  // Perform the calculations only when direction is rtl to avoid messing up the ltr behavior
-  if (direction !== 'rtl') {
-    return scrollLeft;
-  }
-
-  const type = detectScrollType();
-
-  switch (type) {
-    case 'negative':
-      return element.scrollWidth - element.clientWidth + scrollLeft;
-    case 'reverse':
-      return element.scrollWidth - element.clientWidth - scrollLeft;
-    default:
-      return scrollLeft;
-  }
-}