fix: before admin stations removal

frontend/src/pages/SettingsPage.tsx

@@ -324,7 +324,7 @@ export const SettingsPage: React.FC = () => {
             <ListItem>
               <ListItemText 
                 primary="Units for distance and capacity" 
-                secondary="Choose between Imperial (miles, gallons) or Metric (kilometers, liters)"
+                secondary="Imperial: miles, gallons, MPG, USD | Metric: km, liters, L/100km, EUR"
                 sx={{ pl: 7 }}
               />
               <ListItemSecondaryAction>

frontend/src/pages/admin/AdminCatalogPage.tsx

@@ -525,9 +525,6 @@ export const AdminCatalogPage: React.FC = () => {
                 <Typography>
                   <strong>To Update:</strong> {importPreview.toUpdate.length}
                 </Typography>
-                <Typography>
-                  <strong>To Delete:</strong> {importPreview.toDelete.length}
-                </Typography>
               </Box>
 
               {/* Errors */}