Remove unused localized strings

Author: alexeysemenyukoracle

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

@@ -34,10 +34,6 @@ error.explicit-sign-no-cert=Signature explicitly requested but no signing certif
 error.explicit-sign-no-cert.advice=Specify a valid mac-signing-key-user-name and mac-signing-keychain
 error.must-sign-app-store=Mac App Store apps must be signed, and signing has been disabled by bundler configuration
 error.must-sign-app-store.advice=Use --mac-sign option with appropriate user-name and keychain
-error.no-app-signing-key=No Mac App Store App Signing Key
-error.no-app-signing-key.advice=Install your app signing keys into your Mac Keychain using XCode.
-error.no-pkg-signing-key=No Mac App Store Installer Signing Key
-error.no-pkg-signing-key.advice=Install your app signing keys into your Mac Keychain using XCode.
 error.certificate.expired=Error: Certificate expired {0}
 error.cert.not.found=No certificate found matching [{0}] using keychain [{1}]
 error.multiple.certs.found=WARNING: Multiple certificates found matching [{0}] using keychain [{1}], using first one