fix(maintainability): resolve F-15 — remove all commented-out dead code blocks

src/app/Http/Controllers/RainfallController.php

@@ -214,22 +214,6 @@ class RainfallController extends Controller
                 ->orderBy('timestamp')
                 ->get();
                 return response()->json($graphData);
-
-        //    $graphData = DB::table('rainfall')
-        //         ->select(
-        //             DB::raw("DATE(timestamp) as date"),
-        //             DB::raw("TO_CHAR(timestamp, 'HH24:MI') AS time_slot"),
-        //             'currentrf'
-        //         )
-        //         ->where('stationid', $stationid)
-        //         ->whereBetween('timestamp', [
-        //             now()->subDays(7)->startOfDay(),
-        //             now()->endOfDay()
-        //         ])
-        //         ->whereRaw("EXTRACT(MINUTE FROM timestamp) % 5 = 0") // only multiples of 5 minutes
-        //         ->orderBy('timestamp')
-        //         ->get();
-
     }
 
     // Function retrieve data of 6 Hours Rainfall fo Graph Page
@@ -293,8 +277,6 @@ class RainfallController extends Controller
     //Return View Graph Page
     public function graphPage($stationid,$dates)
     {
-        // $station = DB::table('station')->where('stationid',$stationid)->first();
-
         return view('layout.graph.rainfall',compact('stationid','dates'));
     }