Enable clippy warnings with no violations
Enable clippy warnings with no violations

Prior to this CL, clippy warnings needless_doctest_main and
blocks_in_if_conditions were suppressed. It turns out they have no
violations, as removing them and running cargo clippy produces no
warning. This CL removes those suppressions.

BUG=b:157245930, chromium:908640
Test=cargo clippy

Change-Id: I82f82bf2fdb7740f45e7187a9b2710fb7dc2ca04
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4015559
Reviewed-by: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>
Auto-Submit: Clarissa Garvey <18c93150ce036b251830022c755392b5185f2959@chromium.org>
Commit-Queue: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>

google/crosvm,google/crosvm,google/crosvm,google/crosvm