Remove mock hotspot data from MapPage

src/pages/MapPage.tsx

@@ -388,42 +388,6 @@ export function MapPage() {
         })
         .catch((error) => {
           console.error('Failed to fetch hotspots:', error);
-          // Use sample hotspot data for demonstration
-          setHotspots([
-            {
-              id: 'hotspot1',
-              latitude: 53.3498,
-              longitude: -6.2603,
-              radius: 500,
-              reportCount: 15,
-              severityScore: 0.75,
-              lastReportDate: new Date('2024-01-20'),
-              calculatedAt: new Date('2024-01-21'),
-              severity: 'high',
-            },
-            {
-              id: 'hotspot2',
-              latitude: 51.8969,
-              longitude: -8.4863,
-              radius: 450,
-              reportCount: 8,
-              severityScore: 0.45,
-              lastReportDate: new Date('2024-01-19'),
-              calculatedAt: new Date('2024-01-21'),
-              severity: 'medium',
-            },
-            {
-              id: 'hotspot3',
-              latitude: 53.2707,
-              longitude: -9.0568,
-              radius: 600,
-              reportCount: 22,
-              severityScore: 0.88,
-              lastReportDate: new Date('2024-01-21'),
-              calculatedAt: new Date('2024-01-21'),
-              severity: 'critical',
-            },
-          ]);
         })
         .finally(() => {
           setIsLoadingHotspots(false);