Delete old version of PeerConnection::SetConfiguration

Followup to https://webrtc-review.googlesource.com/c/src/+/149166

Bug: None
Change-Id: I7b33ee241e3259b8d43f924a38a1e79ec2cd697f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/149812
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Commit-Queue: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29057}
diff --git a/pc/peer_connection_interface_unittest.cc b/pc/peer_connection_interface_unittest.cc
index f389787..f9c40c2 100644
--- a/pc/peer_connection_interface_unittest.cc
+++ b/pc/peer_connection_interface_unittest.cc
@@ -2639,8 +2639,8 @@
   bad_server.username = "foo";
   config.servers.push_back(bad_server);
   RTCError error;
-  EXPECT_FALSE(pc_->SetConfiguration(config, &error));
-  EXPECT_EQ(RTCErrorType::INVALID_PARAMETER, error.type());
+  EXPECT_EQ(pc_->SetConfiguration(config).type(),
+            RTCErrorType::INVALID_PARAMETER);
 }
 
 // Test that PeerConnection::Close changes the states to closed and all remote