removed unused import

[ci skip]

main/ui/src/main/resources/fxml/recoverykey_display.fxml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<?import javafx.geometry.Insets?>
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.ButtonBar?>
 <?import javafx.scene.control.Label?>