Revert "Revert "We can remove NioSocketChannel at least... possibly o…

…thers as well. These were likely required in previous versions of""

This reverts commit 3cdf5fe.

Hmmm, a revert of a revert.. those are always tasty.

Original revert was motivated by the appearance of helidon-io/helidon#1722 in the Helidon test case.  Thing is
this can't be reproduced in non-Helidon contexts with the same GraalVM version.  And it's definitely the case that a no-arg
constructor is present (see
https://github.com/netty/netty/blob/netty-4.1.60.Final/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java).
So... this looks to be something unique to Helidon.

core/src/main/resources/META-INF/native-image/com.datastax.oss/java-driver-core/reflection.json

@@ -118,13 +118,6 @@
     "allDeclaredMethods": true,
     "allPublicMethods": true
   },
-  {
-    "name": "io.netty.channel.socket.nio.NioSocketChannel",
-    "allDeclaredConstructors": true,
-    "allPublicConstructors": true,
-    "allDeclaredMethods": true,
-    "allPublicMethods": true
-  },
   {
     "name": "io.netty.buffer.AbstractByteBufAllocator",
     "allDeclaredConstructors": true,