81110 remove unnecessary codes

packages/app/src/components/LikeButtons.tsx

@@ -1,4 +1,4 @@
-import React, { FC, useState, useEffect } from 'react';
+import React, { FC, useState } from 'react';
 
 import { UncontrolledTooltip, Popover, PopoverBody } from 'reactstrap';
 import { withTranslation } from 'react-i18next';

packages/app/src/components/Navbar/SubNavButtons.tsx

@@ -67,7 +67,7 @@ const SubNavButtons: FC<SubNavButtonsProps> = (props: SubNavButtonsProps) => {
           sumOfLikers={sumOfLikers}
           likerIds={likerIds}
           isLiked={isLiked}
-          likers={likers || []}
+          likers={likers}
           onLikeClicked={likeClickhandler}
         >
         </PageReactionButtons>