Revert of [GN] Define USE_EABI_HARDFLOAT=1 when arm_float_abi=="hard". (patchset #1 id:1 of https://codereview.chromium.org/1839763003/ )

Reason for revert:
Appears to break Android crbug.com/604422

Original issue's description:
> [GN] Define USE_EABI_HARDFLOAT=1 when arm_float_abi=="hard".
>
> Add this define to the config used for mksnapshot. This fixes a bug
> where certain applications would fail at runtime on Chromecast.
>
> BUG=592660
> LOG=Y
> Bug: internal b/27495984
>
> Test: Formerly broken Cast apps load and run as expected.
>
> Committed: https://crrev.com/86357d5235ceba61c151f0b6e509bcb365860454
> Cr-Commit-Position: refs/heads/master@{#35183}

TBR=dpranke@chromium.org,alokp@chromium.org,titzer@chromium.org,slan@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=592660,604422
LOG=n

Review URL: https://codereview.chromium.org/1906373002

Cr-Commit-Position: refs/heads/master@{#35725}