gpb 4.5.1 sets modules to hidden now (#128)

Author: tsloughter

bin/set-edoc-hidden

@@ -9,7 +9,7 @@
         {counters, "~> 0.2.1"}]}.
 
 {project_plugins, [covertool,
-                   rebar3_gpb_plugin,
+                   {rebar3_gpb_plugin, "~> 2.6.1"},
                    rebar3_lint]}.
 {gpb_opts, [
   {i, "priv/opencensus-proto/src/opencensus/proto/trace"},
@@ -53,7 +53,4 @@
 
 {shell, [{apps, [opencensus]}]}.
 
-%% Awesomely bad hack to ensure oc_trace_pb is hidden from docs.
-{pre_hooks, [{"(linux|darwin|solaris|freebsd|netbsd|openbsd)",
-              edoc, "sh bin/set-edoc-hidden src/oc_trace_pb.erl src/oc_trace_config_pb.erl"}]}.
 {post_hooks, [{edoc, "doc/build.sh"}]}.