Remove non-functional 'My collections' and 'Shared with me' filter options

- Remove broken filter entries from filters array in CollectionListHeader.tsx
- Keep 'All' filter option for consistency with other pages
- Fixes BUS-1874: Collections page filtering tabs that don't work properly
- Backend API already supports optional filter parameters, no changes needed
- Maintains existing CollectionFilters component and UI structure

Co-Authored-By: Wells Bunker <wells@buster.so>

apps/web/src/controllers/CollectionListController/CollectionListHeader.tsx

@@ -90,14 +90,6 @@ const filters: SegmentedItem<string>[] = [
     label: 'All',
     value: JSON.stringify({}),
   },
-  {
-    label: 'My collections',
-    value: JSON.stringify({ owned_by_me: true }),
-  },
-  {
-    label: 'Shared with me',
-    value: JSON.stringify({ shared_with_me: true }),
-  },
 ];
 
 const CollectionFilters: React.FC<{