refactor: remove description and rules mock posts

Removed all fake posts for subplebbit description and rules, including dedicated routes, components, and all related logic across the codebase. Board admins can now pin regular posts if they want to provide a description.

src/views/board/board.tsx

@@ -16,8 +16,6 @@ import useSortingStore from '../../stores/use-sorting-store';
 import { getSubplebbitAddress } from '../../lib/utils/route-utils';
 import ErrorDisplay from '../../components/error-display/error-display';
 import LoadingEllipsis from '../../components/loading-ellipsis';
-import SubplebbitDescription from '../../components/subplebbit-description';
-import SubplebbitRules from '../../components/subplebbit-rules';
 import { Post } from '../post';
 
 const lastVirtuosoStates: { [key: string]: StateSnapshot } = {};
@@ -336,23 +334,11 @@ const Board = ({ feedCacheKey, viewType, boardIdentifier: boardIdentifierProp, t
     <>
       {shouldShowSnow() && <hr />}
       <div className={`${styles.content} ${shouldShowSnow() ? styles.garland : ''}`}>
-        {((description && description.length > 0) || isInAllView) && (
-          <SubplebbitDescription
-            avatarUrl={suggested?.avatarUrl}
-            subplebbitAddress={subplebbitAddress}
-            createdAt={createdAt}
-            description={description}
-            replyCount={isInAllView ? 0 : rules?.length > 0 ? 1 : 0}
-            shortAddress={shortAddress}
-            title={title}
-          />
-        )}
         {shouldShowErrorToUser && (
           <div className={styles.error}>
             <ErrorDisplay error={error} />
           </div>
         )}
-        {rules && !description && rules.length > 0 && <SubplebbitRules subplebbitAddress={subplebbitAddress} createdAt={createdAt} rules={rules} />}
         <Virtuoso
           increaseViewportBy={{ bottom: 1200, top: 1200 }}
           totalCount={combinedFeed.length}