refactor(GatewayAutocomplete): remove selected gateway info display to streamline component and reduce clutter

frontend/src/FilterManager.jsx

@@ -428,33 +428,6 @@ function GatewayAutocomplete({ label, value, onChange, gateways = [], required =
 
   const selectedGateway = gateways.find(g => g.name === value);
 
-  const selectedGatewayInfo =
-    value && selectedGateway && !isOpen ? (
-      <div className="mt-2">
-        <div className="d-flex align-items-center gap-2 p-2 bg-light rounded">
-          <span className="avatar avatar-xs bg-primary-lt">
-            {countryToFlag(selectedGateway.country || '')}
-          </span>
-          <div className="flex-grow-1">
-            <div className="fw-bold">
-              <code>{selectedGateway.name}</code>
-              {selectedGateway.comment && <span className="text-muted ms-2">({selectedGateway.comment})</span>}
-            </div>
-            <div className="text-muted small">
-              {[selectedGateway.serverDns].filter(Boolean).join(' · ')}
-            </div>
-            {(selectedGateway.country || selectedGateway.provider) && (
-              <div className="text-muted small mt-1">
-                {selectedGateway.country && <span className="me-1">{countryToFlag(selectedGateway.country)}</span>}
-                {selectedGateway.provider}
-              </div>
-            )}
-          </div>
-          {selectedGateway.primary && <span className="badge bg-green-lt text-green">Основной</span>}
-        </div>
-      </div>
-    ) : null;
-
   const freeGatewayWarning =
     value && !selectedGateway && !isOpen ? (
       <div className="mt-2">
@@ -561,7 +534,6 @@ function GatewayAutocomplete({ label, value, onChange, gateways = [], required =
         )}
       </div>
 
-      {selectedGatewayInfo}
       {freeGatewayWarning}
     </div>
   );