Depend on official gnmi repo instead of fork

No need to maintain a separate fork of gnmi when what we need can be
achieved with a simple Bazel rule

Change-Id: I94ce6f617306e8fb68c44ec2a64743996d3c2f38
diff --git a/tools/build/bazel/gnmi_workspace.bzl b/tools/build/bazel/gnmi_workspace.bzl
index 6b0d4db..55b76b6 100644
--- a/tools/build/bazel/gnmi_workspace.bzl
+++ b/tools/build/bazel/gnmi_workspace.bzl
@@ -1,15 +1,12 @@
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
-# FIXME: Currently gNMI proto file uses incorrect path to import "gnmi_ext.proto"
-#        Temporary use patch from ONF before gNMI team fix it.
-
-GNMI_COMMIT = "onos"
-GNMI_SHA = "0c4d5f168cb142f8135171204dac3ff8840a147f51fa361079f42fa585bec2ce"
+GNMI_COMMIT = "33a1865c302903e7a2e06f35960e6bc31e84b9f6"
+GNMI_SHA = "cfd412410589e8e019b90681649afdb602f410a0ac67cfa1186a20d73be43e58"
 
 def generate_gnmi():
     http_archive(
         name = "com_github_openconfig_gnmi",
-        urls = ["https://github.com/opennetworkinglab/gnmi/archive/%s.zip" % GNMI_COMMIT],
+        urls = ["https://github.com/openconfig/gnmi/archive/%s.zip" % GNMI_COMMIT],
         sha256 = GNMI_SHA,
         strip_prefix = "gnmi-%s/proto" % GNMI_COMMIT,
         build_file = "//tools/build/bazel:gnmi_BUILD",