Revert "SkZip - synchronized indexing of several pointers"

This reverts commit f3c4a829c64f6ef2177f86603366c6df9fe801e1.

Reason for revert: std::get<T> is a c++14 std library call

Original change's description:
> SkZip - synchronized indexing of several pointers
> 
> This is the mechanism for syncing a bunch of things with
> contiguous memory like vector<>, array<> and SkSpan<>.
> 
> In a following CL, a convenience function SkMakeZip will
> easily convert most containers into a zip.
> 
> Change-Id: Icda5b1774ae21c4c163a663f6d2b0f119f63ccba
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/240200
> Commit-Queue: Herb Derby <herb@google.com>
> Reviewed-by: Ben Wagner <bungeman@google.com>

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

Change-Id: Idc52b0552cd01b163357a45d43d9531e62694dda
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/242356
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Herb Derby <herb@google.com>
4 files changed