Motivation:
netty-all already depends on the other netty-* packages so there's no need to also bundle them.
The duplicated classes cause classpath issues, particularly with Java > 8, which reports errors like this:
The package io.netty.buffer is accessible from more than one module: io.netty.all, io.netty.buffer
Modifications:
- Removed bundling tasks from netty-all's maven pom.xml
Result:
- netty-all no longer bundles all classes. Instead, classes are provided by expressed dependencies.
Fixes#4671