Remove dead code. message.app-image-requires-app-name can not be reported because if name is not explicitly specified, jpackage will use name from the external app image. In other words, there is no need to set app name if --app-image is specified.

Author: alexeysemenyukoracle

src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/MacBaseInstallerBundler.java

@@ -151,12 +151,6 @@ protected void validateAppImageAndBundeler(
                                 "message.app-image-dir-does-not-exist.advice"),
                                 PREDEFINED_APP_IMAGE.getID()));
             }
-            if (APP_NAME.fetchFrom(params) == null) {
-                throw new ConfigException(
-                        I18N.getString("message.app-image-requires-app-name"),
-                        I18N.getString(
-                            "message.app-image-requires-app-name.advice"));
-            }
             if (AppImageFile.load(applicationImage).isSigned()) {
                 if (!Files.exists(
                         PackageFile.getPathInAppImage(applicationImage))) {

src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/resources/MacResources.properties

@@ -74,8 +74,6 @@ message.keychain.error=Error: unable to get keychain list.
 message.building-bundle=Building Mac App Store Package for {0}.
 message.app-image-dir-does-not-exist=Specified application image directory {0}: {1} does not exists.
 message.app-image-dir-does-not-exist.advice=Confirm that the value for {0} exists.
-message.app-image-requires-app-name=When using an external app image you must specify the app name.
-message.app-image-requires-app-name.advice=Set the app name via the -name CLI flag, the fx:application/@name ANT attribute, or via the 'appName' bundler argument.
 message.invalid-identifier=invalid mac bundle identifier [{0}].
 message.invalid-identifier.advice=specify identifier with "--mac-package-identifier".
 message.building-dmg=Building DMG package for {0}.