fix(core): trash page footer display issue (#5402)

Before

![image.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/T2klNLEk0wxLh4NRDzhk/eb5e5b18-c4a2-469b-8763-be34c39ba736.png)

After

![image.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/T2klNLEk0wxLh4NRDzhk/7b3ef339-0cb5-44fe-9e75-cec0e97d28b7.png)

packages/frontend/core/src/components/pure/trash-page-footer/styles.css.ts

@@ -17,13 +17,6 @@ export const deleteHintContainer = style({
   gap: '16px',
   backgroundColor: 'var(--affine-background-primary-color)',
   borderTop: '1px solid var(--affine-border-color)',
-  selectors: {
-    '&[data-has-background="false"]': {
-      backgroundColor: 'transparent',
-      borderTop: 'none',
-      padding: '14px 0',
-    },
-  },
 });
 export const deleteHintText = style({
   fontSize: '15px',