This reverts commit 560bfbcb.

Reason for revert:

Appears to be causing a compile error on the ANGLE roll.
https://chromium-review.googlesource.com/c/chromium/src/+/914429
https://ci.chromium.org/p/chromium/builders/luci.chromium.try/linux_chromium_compile_dbg_ng/11598

/b/swarming/w/ir/cache/builder/linux/src/out/Debug/../../third_party/llvm-build/Release+Asserts/bin/ld.lld: error: undefined symbol: std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::compare(unsigned long, unsigned long, char const*) const
>>> referenced by StandAlone.cpp

Original change's description:
> Vulkan: Add glslang validator to build.
> 
> This binary will be used to generate internal shaders for
> clearing/blit/etc.
> 
> Bug: angleproject:2339
> Change-Id: I13db7d7a4f5a0155798c9b9a6d2972dd69a680ef
> Reviewed-on: https://chromium-review.googlesource.com/904683
> Commit-Queue: Jamie Madill <jmadill@chromium.org>
> Reviewed-by: Geoff Lang <geofflang@chromium.org>

TBR=ynovikov@chromium.org,geofflang@chromium.org,jmadill@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: angleproject:2339
Change-Id: I7bcedf27831648d4c659294d12cab50f6ef9f33f
Reviewed-on: https://chromium-review.googlesource.com/919141Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Luc Ferron <lucferron@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>