Comment out applying patchset dependencies in apply_issue.py
Comment out applying patchset dependencies in apply_issue.py

Context is in the internal chrome-infra thread here:
https://groups.google.com/a/google.com/d/msg/chrome-infra/dNQGjNoP-Dg/XDymPAwOCXkJ

NOPRESUBMIT=true

BUG=chromium:480453

Review URL: https://codereview.chromium.org/1194063003

git-svn-id: fd409f4bdeea2bb50a5d34bb4d4bfc2046a5a3dd@295800 0039d316-1c4b-4281-b951-d872f2087c98

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