internal/system: remove ineffectual join reverting wayland

Removing the pathname socket used to be handled separately, now it is done during the Close call.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/system/dispatcher_test.go

@@ -1,6 +1,7 @@
 package system
 
 import (
+	"io"
 	"log"
 	"os"
 	"reflect"
@@ -13,7 +14,6 @@ import (
 	"hakurei.app/hst"
 	"hakurei.app/internal/acl"
 	"hakurei.app/internal/dbus"
-	"hakurei.app/internal/wayland"
 	"hakurei.app/internal/xcb"
 )
 
@@ -270,9 +270,9 @@ func (k *kstub) aclUpdate(name string, uid int, perms ...acl.Perm) error {
 		stub.CheckArgReflect(k.Stub, "perms", perms, 2))
 }
 
-func (k *kstub) waylandNew(displayPath, bindPath *check.Absolute, appID, instanceID string) (*wayland.SecurityContext, error) {
+func (k *kstub) waylandNew(displayPath, bindPath *check.Absolute, appID, instanceID string) (io.Closer, error) {
 	k.Helper()
-	return nil, k.Expects("waylandNew").Error(
+	return io.NopCloser(nil), k.Expects("waylandNew").Error(
 		stub.CheckArgReflect(k.Stub, "displayPath", displayPath, 0),
 		stub.CheckArgReflect(k.Stub, "bindPath", bindPath, 1),
 		stub.CheckArg(k.Stub, "appID", appID, 2),