As we destruct the Queue now, there's no need to have a shared_ptr indirection.

This makes Renderer part of the vk::Queue allocation.

Bug: b/133127573
Change-Id: I9ea0d427752689e73346e0da950144832d908a2e
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/31685Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>