This reverts commit d98afb78.

Reason for revert: Suspected for angle_perftests failure. See issue.

Bug: chromium:1105609

Original change's description:
> Vulkan: Enable VK_KHR_get_memory_requirements2 extension
> 
> 1. Don't assume support for VK_KHR_get_memory_requirements2.
>    Enable the extension, if supported, during device creation.
> 2. Also let VMA fill in the function pointers for these commands
>    based on Vulkan API version -
>    1. vkGetBufferMemoryRequirements2KHR
>    2. vkGetImageMemoryRequirements2KHR
> 
> Bug: angleproject:4830
> Change-Id: Icd0b3baf56732b5f5f49f320c1feb996204169ed
> Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2293633
> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
> Reviewed-by: Jamie Madill <jmadill@chromium.org>
> Commit-Queue: Mohan Maiya <m.maiya@samsung.com>

TBR=syoussefi@chromium.org,jmadill@chromium.org,m.maiya@samsung.com

Change-Id: Ida9a333f897d87e7608d4fafe9da9f1fad0221e4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: angleproject:4830
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2298146Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>