remove duplicate unicode value

src/main/java/org/cryptomator/ui/controls/FontAwesome5Icon.java

@@ -6,7 +6,6 @@ package org.cryptomator.ui.controls;
 public enum FontAwesome5Icon {
 	ANCHOR("\uF13D"), //
 	ARROW_UP("\uF062"), //
-	ARROWS_ROTATE("\uF021"),
 	BAN("\uF05E"), //
 	BELL("\uF0F3"), //
 	BUG("\uF188"), //

src/main/resources/fxml/vault_list.fxml

@@ -82,7 +82,7 @@
 				</MenuItem>
 				<MenuItem styleClass="dropdown-button-context-menu-item" text="%main.vaultlist.addVaultBtn.menuItemRecover" onAction="#didClickRecoverExistingVault">
 					<graphic>
-						<FontAwesome5IconView glyph="ARROWS_ROTATE" textAlignment="CENTER" wrappingWidth="14"/>
+						<FontAwesome5IconView glyph="SYNC" textAlignment="CENTER" wrappingWidth="14"/>
 					</graphic>
 				</MenuItem>
 			</items>