Stop removing 'failures' from 'requests' to calculate 'other_requests'.
Stop removing 'failures' from 'requests' to calculate 'other_requests'.

It doesn't make sense, failures are counted in parallel to all the 'requests',
so it's not a sum. This could lead to negative values of 'other_requests'.

R=vadimsh@chromium.org
BUG=

Review URL: https://codereview.appspot.com/81190046

luci/luci-py,madecoste/swarming,pombreda/swarming,luci/luci-py,madecoste/swarming,pombreda/swarming,madecoste/swarming,pombreda/swarming,luci/luci-py,madecoste/swarming,pombreda/swarming,luci/luci-py