Revert "[zlib] Import canonical zlib inflate cover tests"

This reverts commit 591bbce5ef7136253ac799078a51aac60553e578.

Reason for revert: compile failure: https://ci.chromium.org/p/chromium/builders/ci/win32-archive-rel/12393

Original change's description:
> [zlib] Import canonical zlib inflate cover tests
> 
> There is a test suite in Canonical zlib that ensures correctness and
> coverage of inflate/deflate: the inflate cover (infcover.c) suite.
> 
> This patch imports the inflate cover suite with the necessary changes
> to make it build and run under Chromes's C++11 GTEST test system.
> 
> There are minimal changes (i.e. undefined 'local', miscellaneous C
> casts to use C++ casts, etc) so we can build it as C++ code and hook
> into GTEST e.g. use EXPECT_TRUE instead of C assert from <assert.h>.
> 
> Adds a patch file for these changes, that can be applied on Canonical
> infcover should we need to sync with a new Canonical zlib release.
> 
> TODO: there's one test accessing a symbol that causes link errors so
> comment that code out for now.
> 
> Bug: 1032721
> Change-Id: I2e7699477025b9eb291d51a713b34a843f1c1116
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2159700
> Reviewed-by: Adenilson Cavalcanti <cavalcantii@chromium.org>
> Reviewed-by: Noel Gordon <noel@chromium.org>
> Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#761646}

TBR=noel@chromium.org,cavalcantii@chromium.org,cblume@chromium.org,adenilson.cavalcanti@arm.com

Change-Id: I4eea478017f0408356ffbfd96481337875905839
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1032721
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2161363
Reviewed-by: Collin Baker <collinbaker@chromium.org>
Commit-Queue: Collin Baker <collinbaker@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#761658}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f2aa05346c32294a6fd523372e1eafa4a8e17a02
5 files changed