net: Remove npapi entry from DEPS file.

Nothing in net/base is including from third_party/npapi.

This also removes zlib from the DEPS file since it is also not included in net/base.

BUG=493212
R=mattm@chromium.org

Review URL: https://codereview.chromium.org/1180893003

Cr-Commit-Position: refs/heads/master@{#334306}
1 file changed