hg: code-tools/jtreg: remove definitions related to JavaHelp

[jonathan.gibbons at oracle.com]

Changeset: 34c51cabc7f0
Author:    jjg
Date:      2020-05-12 16:09 -0700
URL:       https://hg.openjdk.java.net/code-tools/jtreg/rev/34c51cabc7f0

remove definitions related to JavaHelp

! make/Defs.gmk
! make/jtdiff.gmk
! make/jtreg.gmk