app-emulation/docker-registry: remove unused patch

Closes: https://github.com/gentoo/gentoo/pull/13066
Signed-off-by: Michael Mair-Keimberger <m.mairkeimberger@gmail.com>
Signed-off-by: Zac Medico <zmedico@gentoo.org>

app-emulation/docker-registry/files/docker-registry-2.6.1-notifications-expvar.patch

@@ -1,64 +0,0 @@
-From 9a58c91051e03b46f1461e371a7bf527c1284612 Mon Sep 17 00:00:00 2001
-From: Noah Treuhaft <noah.treuhaft@docker.com>
-Date: Wed, 8 Feb 2017 11:38:44 -0800
-Subject: [PATCH] notifications: fix expvar for Go 1.7
-
-Remove EndpointConfig.Transport from the return value of the
-registry.notifications.endpoints expvar.Func.  It results in an empty
-value for that expvar variable under Go 1.7 because it is a non-nil
-*http.Transport, which Go 1.7 can no longer encode as JSON.
-
-Signed-off-by: Noah Treuhaft <noah.treuhaft@docker.com>
----
- notifications/endpoint.go     |  2 +-
- notifications/metrics_test.go | 28 ++++++++++++++++++++++++++++
- 2 files changed, 29 insertions(+), 1 deletion(-)
- create mode 100644 notifications/metrics_test.go
-
-diff --git a/src/github.com/docker/distribution/notifications/endpoint.go b/src/github.com/docker/distribution/notifications/endpoint.go
-index 29a9e27b5..44d0f6d7b 100644
---- a/src/github.com/docker/distribution/notifications/endpoint.go
-+++ b/src/github.com/docker/distribution/notifications/endpoint.go
-@@ -13,7 +13,7 @@ type EndpointConfig struct {
- 	Threshold         int
- 	Backoff           time.Duration
- 	IgnoredMediaTypes []string
--	Transport         *http.Transport
-+	Transport         *http.Transport `json:"-"`
- }
- 
- // defaults set any zero-valued fields to a reasonable default.
-diff --git a/src/github.com/docker/distribution/notifications/metrics_test.go b/src/github.com/docker/distribution/notifications/metrics_test.go
-new file mode 100644
-index 000000000..03a08e2c8
---- /dev/null
-+++ b/notifications/metrics_test.go
-@@ -0,0 +1,28 @@
-+package notifications
-+
-+import (
-+	"encoding/json"
-+	"expvar"
-+	"testing"
-+)
-+
-+func TestMetricsExpvar(t *testing.T) {
-+	endpointsVar := expvar.Get("registry").(*expvar.Map).Get("notifications").(*expvar.Map).Get("endpoints")
-+
-+	var v interface{}
-+	if err := json.Unmarshal([]byte(endpointsVar.String()), &v); err != nil {
-+		t.Fatalf("unexpected error unmarshaling endpoints: %v", err)
-+	}
-+	if v != nil {
-+		t.Fatalf("expected nil, got %#v", v)
-+	}
-+
-+	NewEndpoint("x", "y", EndpointConfig{})
-+
-+	if err := json.Unmarshal([]byte(endpointsVar.String()), &v); err != nil {
-+		t.Fatalf("unexpected error unmarshaling endpoints: %v", err)
-+	}
-+	if slice, ok := v.([]interface{}); !ok || len(slice) != 1 {
-+		t.Logf("expected one-element []interface{}, got %#v", v)
-+	}
-+}