optimize: optimize cardheader code

Author: Ohh-889

packages/ui/src/components/card/source/CardHeader.tsx

@@ -1,9 +1,9 @@
 import { cardVariants, cn } from '@skyroc-ui/variants';
-import React, { useMemo } from 'react';
+import { forwardRef } from 'react';
 
 import type { CardHeaderProps } from '../type';
 
-export const CardHeader = React.forwardRef<HTMLDivElement, CardHeaderProps>((props, ref) => {
+export const CardHeader = forwardRef<HTMLDivElement, CardHeaderProps>((props, ref) => {
   const { className, size, ...rest } = props;
 
   const { header } = cardVariants({ size });