util/imagetools: remove unused Resolver.ImageConfig

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/containerd/ttrpc/Protobuild.toml

@@ -1,28 +0,0 @@
-version = "2"
-generators = ["go"]
-
-# Control protoc include paths. Below are usually some good defaults, but feel
-# free to try it without them if it works for your project.
-[includes]
-  # Include paths that will be added before all others. Typically, you want to
-  # treat the root of the project as an include, but this may not be necessary.
-  before = ["."]
-
-  # Paths that will be added untouched to the end of the includes. We use
-  # `/usr/local/include` to pickup the common install location of protobuf.
-  # This is the default.
-  after = ["/usr/local/include"]
-
-# This section maps protobuf imports to Go packages. These will become
-# `-M` directives in the call to the go protobuf generator.
-[packages]
-  "google/protobuf/any.proto" = "github.com/gogo/protobuf/types"
-  "proto/status.proto" = "google.golang.org/genproto/googleapis/rpc/status"
-
-[[overrides]]
-# enable ttrpc and disable fieldpath and grpc for the shim
-prefixes = ["github.com/containerd/ttrpc/integration/streaming"]
-generators = ["go", "go-ttrpc"]
-
-[overrides.parameters.go-ttrpc]
-prefix = "TTRPC"