Remove unused engine configuration

Author: drymus

runtime/binding-http/src/test/java/io/aklivity/zilla/runtime/binding/http/internal/streams/rfc8441/client/ConnectIT.java

@@ -43,9 +43,7 @@ public class ConnectIT
 
     private final EngineRule engine = new EngineRule()
         .directory("target/zilla-itests")
-        .commandBufferCapacity(1024)
-        .responseBufferCapacity(1024)
-        .counterValuesBufferCapacity(8192)
+        .countersBufferCapacity(8192)
         .configurationRoot("io/aklivity/zilla/specs/binding/http/config/v2")
         .external("net0")
         .configure(EngineConfiguration.ENGINE_DRAIN_ON_CLOSE, false)

runtime/binding-http/src/test/java/io/aklivity/zilla/runtime/binding/http/internal/streams/rfc8441/server/ConnectIT.java

@@ -42,9 +42,7 @@ public class ConnectIT
 
     private final EngineRule engine = new EngineRule()
         .directory("target/zilla-itests")
-        .commandBufferCapacity(1024)
-        .responseBufferCapacity(1024)
-        .counterValuesBufferCapacity(8192)
+        .countersBufferCapacity(8192)
         .configurationRoot("io/aklivity/zilla/specs/binding/http/config/v2")
         .external("app0")
         .configure(EngineConfiguration.ENGINE_DRAIN_ON_CLOSE, false)

runtime/binding-ws/src/test/java/io/aklivity/zilla/runtime/binding/ws/internal/streams/server/WsOverHttp2IT.java

@@ -39,9 +39,7 @@ public class WsOverHttp2IT
 
     private final EngineRule engine = new EngineRule()
         .directory("target/zilla-itests")
-        .commandBufferCapacity(1024)
-        .responseBufferCapacity(1024)
-        .counterValuesBufferCapacity(4096)
+        .countersBufferCapacity(4096)
         .configurationRoot("io/aklivity/zilla/specs/binding/ws/config")
         .external("app0")
         .clean();