refactor: remove unused admin user update function and update related components to use new API

src/api/admin-auth.ts

@@ -42,11 +42,3 @@ export async function postAdminLogin(
 export async function getAdminMe(): Promise<AdminAuthMeResponse> {
   return adminRequest.get<AdminAuthMeResponse>(`${API_V1_PREFIX}/admin/auth/me`);
 }
-
-/** `PUT /api/v1/admin/auth/me`（更新自身账号信息，需 Token） */
-export async function putAdminMe(body: {
-  nickname?: string;
-  password?: string;
-}): Promise<AdminAuthMeResponse> {
-  return adminRequest.put<AdminAuthMeResponse>(`${API_V1_PREFIX}/admin/auth/me`, body);
-}