hg: jigsaw/jake: Removed some more outdated jigsaw specifics parts from build files

[erik . joelsson]

Changeset: 7cf69b6b3538
Author:    erikj
Date:      2015-11-18 13:56 +0100
URL:       http://hg.openjdk.java.net/jigsaw/jake/rev/7cf69b6b3538

Removed some more outdated jigsaw specifics parts from build files

! common/autoconf/configure.ac
! common/autoconf/flags.m4
! common/autoconf/generated-configure.sh
! common/autoconf/spec.gmk.in