The defining instruction already contains the type ID.

Bug: b/129000021
Change-Id: I0b29fda73964f5f4a73181a61a0f30cd1c47f404
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/43692
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>