Remove client-side password generation form classifier.

This classifier is superseded by server-side classifiers. Since
the generation logic in the renderer process is going to be refactored
and simplified, that the good time to remove it.

Bug: 866444, 621442
Change-Id: I813d53fda594956813fc8cd83567712e34331cfb
Reviewed-on: https://chromium-review.googlesource.com/1146724
Commit-Queue: Vadym Doroshenko <dvadym@chromium.org>
Reviewed-by: Maxim Kolosovskiy <kolos@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579109}
36 files changed