Fix the polarity of the docstring for TrybotPatchPool.__nonzero__.
Fix the polarity of the docstring for TrybotPatchPool.__nonzero__.

This function simply returns

any([self.gerrit_patches, self.local_patches, self.remote_patches])

which will return True if any of the list of patches has something in it. The
docstring for this function said the opposite, namely that the function would
return True if the pool had no patches.

BUG=None
TEST=Ran run_tests.

Change-Id: I51804ef39e5607aca3c0e4629cf7e36d1eceb3b6
Reviewed-on: https://chromium-review.googlesource.com/200828
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Commit-Queue: Gabe Black <5c8aa1266c03186393d9e7b3b4e3b14239af8201@chromium.org>
Tested-by: Gabe Black <5c8aa1266c03186393d9e7b3b4e3b14239af8201@chromium.org>

bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite