docs: 3.0 has been out for long enough to be the default

@hboutemy
diff --git a/src/site/apt/index.apt.vm b/src/site/apt/index.apt.vm
index d043dde..edcc5c5 100644
--- a/src/site/apt/index.apt.vm
+++ b/src/site/apt/index.apt.vm
@@ -48,16 +48,6 @@
 
  []
 
-* Hint for release 3.0.0
-
- The goal <<<war:manifest>>> has been removed
- cause it violated the principle generating files into <<<src/>>> folder.
- Furthermore everything can be done by using an appropriate configuration
- for the {{{./war-mojo.html#archive}war:war archive}}.
-
- The default value for <<<failOnMissingWebXml>>> has been changed from
- <<<true>>> to <<<false>>>.
-
 * Usage
 
   General instructions on how to use the WAR Plugin can be found on the