Revert "Attach whitespaces to the neighbor unresolved blocks"

This reverts commit 131c5ad6f1afe7a2d373031b960580c1b6b4796e.

Reason for revert: Blocking the G3 roll

Original change's description:
> Attach whitespaces to the neighbor unresolved blocks
> 
> Fix the situation when an unresolved {arabic} text is broken into
> many small runs by resolved english spaces.
> 
> Bug: skia:10487
> Change-Id: I3a739501c0fb7e0fc845e68392e1d214df9302db
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/304000
> Commit-Queue: Julia Lavrova <jlavrova@google.com>
> Reviewed-by: Ben Wagner <bungeman@google.com>

TBR=bungeman@google.com,jlavrova@google.com

Change-Id: Iaa338dd5fb5c9962df2ee32bafbc089da0e2b8a1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:10487
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/305797
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
4 files changed