Revert "Fix windows dep for //remoting/host/security_key"

This reverts commit a5ba67adea58501775190d448ea9576e7707de09.

Reason for revert: Broke compile on win-archive-rel.

https://ci.chromium.org/ui/p/chromium/builders/ci/win-archive-rel/25013/overview

Original change's description:
> Fix windows dep for //remoting/host/security_key
>
> remoting/host/security_key/remote_security_key_entry_point.cc includes
> remoting/host/security_key/remote_security_key_main.h
>
> Bug: 1159013
> Change-Id: I5ea373a26d1291b1d5c738f294a8eff76be0c873
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3009314
> Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
> Commit-Queue: Rune Lillesveen <futhark@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#899333}

Bug: 1159013
Change-Id: Ic2ce07bba82749f024289d619591b63bb221b496
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3012278
Reviewed-by: Scott Little <sclittle@chromium.org>
Reviewed-by: Basia Zimirska <basiaz@google.com>
Owners-Override: Scott Little <sclittle@chromium.org>
Auto-Submit: Scott Little <sclittle@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Basia Zimirska <basiaz@google.com>
Cr-Commit-Position: refs/heads/master@{#899359}