scripts: Remove call to switch_to_strict_mode

My change in https://gerrit.chromium.org/gerrit/19795 had removed the "set
-e", but https://gerrit.chromium.org/gerrit/17225 re-enabled it --
presumably because that was originally written when the "set -e" was still
there.  The strict mode causes the script to exit when sym_upload fails
(which is often).

BUG=chromium-os:30878
TEST=Basic run of script

Change-Id: Ic9db057b0d4c14d69e48d756da062cae9e1b185e
Reviewed-on: https://gerrit.chromium.org/gerrit/22654
Reviewed-by: David McMahon <djmm@chromium.org>
Tested-by: David McMahon <djmm@chromium.org>
1 file changed