Remove non-existent removeIndicatorByIndex from export

Line 773 was exporting removeIndicatorByIndex which doesn't exist as a function.
Removed it from the export statement, keeping only addIndicator and removeIndicatorById
which are both defined functions in the module.

src/api/dashboard/static/js/ui/indicators-panel-new.js

@@ -770,7 +770,7 @@ export function drawIndicatorsOnChart() {
 }
 
 // Export functions for module access
-export { addIndicator, removeIndicatorById, removeIndicatorByIndex };
+export { addIndicator, removeIndicatorById };
 
 // Legacy compatibility functions
 window.renderIndicatorList = renderIndicatorPanel;