rm -rf /does/not/exist to fix metrics unit tests.
rm -rf /does/not/exist to fix metrics unit tests.

BUG=none
TEST=Metrics unit tests work now.

Change-Id: If5830c17bbd2f389df3c390fb0de7057b05aa9aa
Reviewed-on: http://gerrit.chromium.org/gerrit/8845
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Tested-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>

andrejro/coreos--scripts,BugRoger/scripts,zhang0137/scripts,marineam/coreos-scripts,nicescale/scripts,sigma/coreos-scripts,endocode/scripts,trnubo/scripts,smilart/scripts,BugRoger/scripts,vmware/coreos-scripts,andrejro/coreos--scripts,BugRoger/scripts,bcwaldon/coreos-scripts,smilart/scripts,crawford/scripts,fivethreeo/scripts,zhang0137/scripts,crawford/scripts,bcwaldon/coreos-scripts,vmware/coreos-scripts,gtank/scripts,nicescale/scripts,glevand/coreos--scripts,smilart/scripts,endocode/scripts,mjg59/scripts,bcwaldon/coreos-scripts,coreos/scripts,marineam/coreos-scripts,fivethreeo/scripts,coreos/scripts,crawford/scripts,gtank/scripts,andrejro/coreos--scripts,mischief/scripts,sigma/coreos-scripts,endocode/scripts,marineam/coreos-scripts,nicescale/scripts,sigma/coreos-scripts,mjg59/scripts,trnubo/scripts,mischief/scripts,trnubo/scripts,mischief/scripts,glevand/coreos--scripts,vmware/coreos-scripts,fivethreeo/scripts,gtank/scripts,mjg59/scripts,zhang0137/scripts