Remove macOS-specific transport label tests (#1396)

The proxy doesn't actually run on macOS, so there's not a lot of value
in having macOS-specific tests, especially as these tests aren't
executed as a part of CI.

This change removes two macOS-specific transport label tests.

linkerd/app/integration/src/tests/telemetry.rs

@@ -1194,78 +1194,6 @@ mod transport {
         test_tcp_accept(TcpFixture::outbound()).await;
     }
 
-    #[tokio::test]
-    #[cfg(target_os = "macos")]
-    async fn inbound_tcp_connect_err() {
-        let _trace = trace_init();
-        let srv = tcp::server()
-            .accept_fut(move |sock| async { drop(sock) })
-            .run()
-            .await;
-        let proxy = proxy::new().inbound(srv).run().await;
-
-        let client = client::tcp(proxy.inbound);
-        let metrics = client::http1(proxy.metrics, "localhost");
-
-        let tcp_client = client.connect().await;
-
-        tcp_client.write(TcpFixture::HELLO_MSG).await;
-        assert_eq!(tcp_client.read().await, &[] as &[u8]);
-        // Connection to the server should be a failure with the EXFULL error
-        metrics::metric("tcp_close_total")
-            .label("peer", "dst")
-            .label("direction", "inbound")
-            .label("errno", "EXFULL")
-            .value(1u64)
-            .assert_in(&metrics)
-            .await;
-
-        // Connection from the client should have closed cleanly.
-        metrics::metric("tcp_close_total")
-            .label("peer", "src")
-            .label("direction", "inbound")
-            .label("errno", "")
-            .value(1u64)
-            .assert_in(&metrics)
-            .await;
-    }
-
-    #[tokio::test]
-    #[cfg(target_os = "macos")]
-    async fn outbound_tcp_connect_err() {
-        let _trace = trace_init();
-        let srv = tcp::server()
-            .accept_fut(move |sock| async { drop(sock) })
-            .run()
-            .await;
-        let proxy = proxy::new().outbound(srv).run().await;
-
-        let client = client::tcp(proxy.outbound);
-        let metrics = client::http1(proxy.metrics, "localhost");
-
-        let tcp_client = client.connect().await;
-
-        tcp_client.write(TcpFixture::HELLO_MSG).await;
-        assert_eq!(tcp_client.read().await, &[] as &[u8]);
-        // Connection to the server should be a failure with the EXFULL error
-        metrics::metric("tcp_close_total")
-            .label("peer", "dst")
-            .label("direction", "outbound")
-            .label("errno", "EXFULL")
-            .value(1u64)
-            .assert_in(&metrics)
-            .await;
-
-        // Connection from the client should have closed cleanly.
-        metrics::metric("tcp_close_total")
-            .label("peer", "src")
-            .label("direction", "outbound")
-            .label("errno", "")
-            .value(1u64)
-            .assert_in(&metrics)
-            .await;
-    }
-
     #[tokio::test]
     async fn inbound_tcp_write_bytes_total() {
         test_write_bytes_total(TcpFixture::inbound()).await