bindings: Remove usages of restricted_float in the Python code.

This argument was present in several functions, but its value was not being
used anywhere since 2015's https://codereview.chromium.org/970843002 ("IDL:
Implement float/double correctly").

R=bashi@chromium.org,haraken@chromium.org,yukishiino@chromium.org

Review-Url: https://codereview.chromium.org/2714133003
Cr-Commit-Position: refs/heads/master@{#453084}
3 files changed