Don't test MockServer's HTTP proxy of an HTTP/2 call (square#8325)

This test is disabled, and it refers to a closed bug.

container-tests/src/test/java/okhttp3/containers/BasicProxyTest.kt

@@ -15,7 +15,6 @@ import okhttp3.containers.BasicMockServerTest.Companion.MOCKSERVER_IMAGE
 import okhttp3.containers.BasicMockServerTest.Companion.trustMockServer
 import okio.buffer
 import okio.source
-import org.junit.jupiter.api.Disabled
 import org.junit.jupiter.api.Test
 import org.mockserver.client.MockServerClient
 import org.mockserver.configuration.Configuration
@@ -107,27 +106,6 @@ class BasicProxyTest {
     }
   }
 
-  @Test
-  @Disabled("https://github.com/square/okhttp/issues/8233")
-  fun testOkHttpSecureProxiedHttp2() {
-    testRequest {
-      val client =
-        OkHttpClient.Builder()
-          .trustMockServer()
-          .proxy(Proxy(Proxy.Type.HTTP, it.remoteAddress()))
-          .protocols(listOf(Protocol.HTTP_2, Protocol.HTTP_1_1))
-          .build()
-
-      val response =
-        client.newCall(
-          Request((mockServer.secureEndpoint + "/person?name=peter").toHttpUrl()),
-        ).execute()
-
-      assertThat(response.body.string()).contains("Peter the person")
-      assertThat(response.protocol).isEqualTo(Protocol.HTTP_2)
-    }
-  }
-
   @Test
   fun testUrlConnectionDirect() {
     testRequest {