Revert "add cast for printf"

Revert "add cast for printf"

This reverts commit Ib9277facab87747b3cf9b71585e63067b4be9a58.

Reason for revert: reverted related CL

Original change's description:
> add cast for printf
>
> BUG=skia:
>
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3020
>
> Change-Id: Ib9277facab87747b3cf9b71585e63067b4be9a58
> Reviewed-on: https://skia-review.googlesource.com/3020
> Reviewed-by: Mike Reed <reed@google.com>
> Commit-Queue: Mike Reed <reed@google.com>
>

TBR=reed@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Change-Id: I1621d4ea42e9a9403ce78db147c62e8a458b4e00
Reviewed-on: https://skia-review.googlesource.com/3024
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>