Remove icudtl.dat.hash

Now that Lacros is being sunset, generating this file is not
required anymore, as icudtl.dat will not be shared between
Ash and Lacros.

Original design doc: go/lacros-icudtl-design
Follow up to:
- https://crrev.com/c/5815590
- https://crrev.com/c/5815591
- https://crrev.com/c/5815808

Bug: 361268560
Change-Id: I1630c0ece410a2d9660cd7d6536e9ed9393d5aaf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/deps/icu/+/5815830
Reviewed-by: Frank Tang <ftang@chromium.org>
5 files changed