Fix: duplicated templates found; removed (#60)

# Background
Two frames exist at the same page without any state.

The blue box is removed:
- Red: the first frame (the correct one)
- Blue: the second frame (duplicated one)

![image](https://github.com/user-attachments/assets/6d576a41-ffac-4678-be0d-83e39fa519ca)


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TODOs are handled

src/pages/users/[nickname].tsx

@@ -64,7 +64,6 @@ const UserByNicknamePage: FC = () => {
           <RitualsFrame nickname={nickname} />
         </Grid2>
       </Grid2>
-      <RitualsFrame nickname={nickname} />
     </Appbar>
   )
 }