Remove dead code. ERR_MissingAppResources is not referenced

Author: alexeysemenyukoracle

src/jdk.jpackage/share/classes/jdk/jpackage/internal/resources/MainResources.properties

@@ -93,7 +93,6 @@ ERR_InvalidOptionWithAppImageSigning=Error: Option [{0}] is not valid when signi
 
 ERR_MissingArgument=Error: Missing argument: {0}
 ERR_MissingRequiredArgument=Error: {0} argument requires at least one of [{1}] argument(s)
-ERR_MissingAppResources=Error: No application jars found
 ERR_AppImageNotExist=Error: App image directory "{0}" does not exist
 ERR_NoAddLauncherName=Error: --add-launcher option requires a name and a file path (--add-launcher <name>=<file path>)
 ERR_NoUniqueName=Error: --add-launcher <name>=<file path> requires a unique name