We no longer need the full vk::Sampler information in
SampledImageDescriptor, since we now only use the id,
so it was replaced with a single uint32_t member
called samplerId.

Bug: b/129523279
Change-Id: I61808054fb5b1327c60e0f34894f9fbd42d36b33
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/54109
Presubmit-Ready: Alexis Hétu <sugoi@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Commit-Queue: Alexis Hétu <sugoi@google.com>