proto/infra -> dc/proto

This cleans up proto/!

Change-Id: I3e280c16deef7ad0b01e6e409062831581ec863e
diff --git a/dc/m6220-proxy/BUILD.bazel b/dc/m6220-proxy/BUILD.bazel
index 50fa692..1d737b5 100644
--- a/dc/m6220-proxy/BUILD.bazel
+++ b/dc/m6220-proxy/BUILD.bazel
@@ -10,8 +10,8 @@
     visibility = ["//visibility:private"],
     deps = [
         "//dc/m6220-proxy/proto:go_default_library",
+        "//dc/proto:go_default_library",
         "//go/mirko:go_default_library",
-        "//proto/infra:go_default_library",
         "@com_github_golang_glog//:go_default_library",
         "@com_github_ziutek_telnet//:go_default_library",
         "@org_golang_google_grpc//codes:go_default_library",