make_chroot: drop glibc-2.26 upgrade hack

Now that we're rolling our own SDKs, we don't need to run this all
the time as our base SDK has the fix.

BUG=chromium:834385
TEST=CQ passes

Change-Id: Ib77c31066c2ee2f774d317d0cd3222c0f3a4d97a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/1898552
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed