fix: non-nullable-type-assertion-style

Author: abhitrueprogrammer

src/app/api/papers/route.ts

@@ -17,15 +17,6 @@ export async function GET(req: NextRequest) {
 
     return NextResponse.json(paper, { status: 200 });
   } catch (error) {
-    if (error instanceof Error) {
-      return NextResponse.json(
-        { message: "Failed to fetch papers", error: error.message },
-        {
-          status:
-            error.message === "Subject query parameter is required" ? 400 : 500,
-        },
-      );
-    }
     return NextResponse.json(
       { message: "Failed to fetch papers", error },
       { status: 500 },