This removes logic tracking whether a number literal in the source
contained a "dot" character or not. The tracking was only needed for
validation of asm.js modules on the AST, it is obsolete now.

R=marja@chromium.org

Change-Id: Ib474e2281db80fe56d43e1af52221a7c66261e01
Reviewed-on: https://chromium-review.googlesource.com/503228Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45255}