hg: jdk/submit: 8222510: Small cleanup for JDK launcher's make file

[manc at google.com]

Changeset: fc483d12a01d
Author:    manc
Date:      2019-04-15 18:37 -0700
URL:       http://hg.openjdk.java.net/jdk/submit/rev/fc483d12a01d

8222510: Small cleanup for JDK launcher's make file
Reviewed-by:

! make/launcher/Launcher-java.base.gmk
! make/launcher/LauncherCommon.gmk