This is per-user data and can easily contain paths to directories outside of the project.

Also remove .vscode/launch.json.

Change-Id: Iefedc52ec8446d4b6de5e6026761359ac9ac1a0f
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/28069
Presubmit-Ready: Ben Clayton <bclayton@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>