diff --git a/packages/react-components/react-message-bar/library/src/components/MessageBarGroup/MessageBarTransition.tsx b/packages/react-components/react-message-bar/library/src/components/MessageBarGroup/MessageBarTransition.tsx
deleted file mode 100644
index afeaa6ecf1ded..0000000000000
--- a/packages/react-components/react-message-bar/library/src/components/MessageBarGroup/MessageBarTransition.tsx
+++ /dev/null
@@ -1,74 +0,0 @@
-import * as React from 'react';
-import { Transition, TransitionStatus } from 'react-transition-group';
-import { MessageBarTransitionContextProvider } from '../../contexts/messageBarTransitionContext';
-import { MessageBarGroupProps } from './MessageBarGroup.types';
-
-// TODO: delete this unused code to save bytes
-const getClassName = (
-  status: TransitionStatus,
-  enterClassName: string,
-  exitClassName: string,
-  animate: MessageBarGroupProps['animate'],
-) => {
-  switch (status) {
-    case 'entering':
-    case 'entered':
-      return animate === 'both' ? enterClassName : '';
-    case 'exiting':
-    case 'exited':
-      return exitClassName;
-    default:
-      return '';
-  }
-};
-
-/**
- * Internal component that controls the animation transition for MessageBar components
- * @internal
- * @deprecated Code is unused, replaced by motion components
- */
-export const MessageBarTransition: React.FC<{
-  children: React.ReactElement;
-  enterClassName: string;
-  exitClassName: string;
-  animate: MessageBarGroupProps['animate'];
-}> = ({ children, enterClassName, exitClassName, animate, ...rest }) => {
-  const nodeRef = React.useRef<HTMLDivElement>(null);
-
-  return (
-    <Transition timeout={250} nodeRef={nodeRef} {...rest}>
-      {state => (
-        <MessageBarTransitionInner
-          animate={animate}
-          enterClassName={enterClassName}
-          exitClassName={exitClassName}
-          nodeRef={nodeRef}
-          state={state}
-        >
-          {children}
-        </MessageBarTransitionInner>
-      )}
-    </Transition>
-  );
-};
-
-// TODO: delete this unused code to save bytes
-const MessageBarTransitionInner: React.FC<{
-  children: React.ReactElement;
-  enterClassName: string;
-  exitClassName: string;
-  animate: MessageBarGroupProps['animate'];
-  nodeRef: React.Ref<HTMLDivElement | null>;
-  state: TransitionStatus;
-}> = ({ children, state, enterClassName, exitClassName, animate, nodeRef }) => {
-  const className = getClassName(state, enterClassName, exitClassName, animate);
-  const context = React.useMemo(
-    () => ({
-      className,
-      nodeRef,
-    }),
-    [className, nodeRef],
-  );
-
-  return <MessageBarTransitionContextProvider value={context}>{children}</MessageBarTransitionContextProvider>;
-};