Remove deprecated Netty-related settings

Fixes #376

Author: acogoluegnes

src/main/java/com/rabbitmq/stream/ChannelCustomizer.java

@@ -187,39 +187,6 @@ public interface EnvironmentBuilder {
    */
   EnvironmentBuilder requestedMaxFrameSize(int requestedMaxFrameSize);
 
-  /**
-   * The Netty {@link EventLoopGroup} instance to use.
-   *
-   * <p>The environment uses its own instance by default. It is the developer's responsibility to
-   * close the {@link EventLoopGroup} they provide.
-   *
-   * @param eventLoopGroup
-   * @return this builder instance
-   * @deprecated use {@link NettyConfiguration#eventLoopGroup(EventLoopGroup)} from {@link #netty()}
-   *     instead
-   */
-  EnvironmentBuilder eventLoopGroup(EventLoopGroup eventLoopGroup);
-
-  /**
-   * Netty's {@link io.netty.buffer.ByteBuf} allocator.
-   *
-   * @param byteBufAllocator
-   * @return this builder instance
-   * @deprecated use {@link NettyConfiguration#byteBufAllocator(ByteBufAllocator)} from {@link
-   *     #netty()} instead
-   */
-  EnvironmentBuilder byteBufAllocator(ByteBufAllocator byteBufAllocator);
-
-  /**
-   * An extension point to customize Netty's {@link io.netty.channel.Channel}s used for connection.
-   *
-   * @param channelCustomizer
-   * @return this builder instance
-   * @deprecated use {@link NettyConfiguration#channelCustomizer(Consumer)} from {@link #netty()}
-   *     instead
-   */
-  EnvironmentBuilder channelCustomizer(ChannelCustomizer channelCustomizer);
-
   /**
    * The checksum strategy used for chunk checksum.
    *

src/main/java/com/rabbitmq/stream/EnvironmentBuilder.java

@@ -134,26 +134,12 @@ public EnvironmentBuilder compressionCodecFactory(
     return this;
   }
 
-  @SuppressWarnings("deprecation")
-  @Override
-  public EnvironmentBuilder eventLoopGroup(EventLoopGroup eventLoopGroup) {
-    this.netty().eventLoopGroup(eventLoopGroup);
-    return this;
-  }
-
   @Override
   public EnvironmentBuilder id(String id) {
     this.id = id;
     return this;
   }
 
-  @SuppressWarnings("deprecation")
-  @Override
-  public EnvironmentBuilder byteBufAllocator(ByteBufAllocator byteBufAllocator) {
-    this.netty().byteBufAllocator(byteBufAllocator);
-    return this;
-  }
-
   @Override
   public EnvironmentBuilder rpcTimeout(Duration timeout) {
     this.clientParameters.rpcTimeout(timeout);
@@ -195,13 +181,6 @@ public StreamEnvironmentBuilder requestedMaxFrameSize(int requestedMaxFrameSize)
     return this;
   }
 
-  @SuppressWarnings("deprecation")
-  public StreamEnvironmentBuilder channelCustomizer(
-      com.rabbitmq.stream.ChannelCustomizer channelCustomizer) {
-    this.netty().channelCustomizer(ch -> channelCustomizer.customize(ch));
-    return this;
-  }
-
   public StreamEnvironmentBuilder chunkChecksum(ChunkChecksum chunkChecksum) {
     this.clientParameters.chunkChecksum(chunkChecksum);
     return this;