Revert of cast SK_ARRAY_COUNT to make it sign agnostic (patchset #1 id:1 of https://codereview.chromium.org/1299943002/ )

Reason for revert:
fails on chrome build on windows

Original issue's description:
> cast SK_ARRAY_COUNT to make it sign agnostic
>
> By adding a cast to SK_ARRAY_COUNT, the compiler treats the
> compile-time value as if it were a const int, and like regular
> numbers, permits it to be compared to signed and unsigned
> numbers freely.
>
> R=reed@google.com
>
> Committed: https://skia.googlesource.com/skia/+/bca86202a48b2afa527b6e40d8b360ce3bc7c2e7

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

Review URL: https://codereview.chromium.org/1285263007
diff --git a/include/core/SkTypes.h b/include/core/SkTypes.h
index fb1ccec..2e49511 100644
--- a/include/core/SkTypes.h
+++ b/include/core/SkTypes.h
@@ -305,7 +305,7 @@
 
 /** Returns the number of entries in an array (not a pointer) */
 template <typename T, size_t N> char (&SkArrayCountHelper(T (&array)[N]))[N];
-#define SK_ARRAY_COUNT(array) ((int) sizeof(SkArrayCountHelper(array)))
+#define SK_ARRAY_COUNT(array) (sizeof(SkArrayCountHelper(array)))
 
 #define SkAlign2(x)     (((x) + 1) >> 1 << 1)
 #define SkIsAlign2(x)   (0 == ((x) & 1))