[doc] Simplify release notes section
Those are all about backward incompatibilities, keep only one section about that.
--- a/doc/changes/3.25.rst Mon Mar 20 11:35:58 2017 +0100
+++ b/doc/changes/3.25.rst Wed Mar 22 09:41:19 2017 +0100
@@ -52,20 +52,12 @@
they start the scheduler. Site administrators are thus expected to start
this scheduler as a separate process.
-
-API changes
------------
-
* In ``cubicweb.pyramid``, function ``make_cubicweb_application`` got renamed
into ``config_from_cwconfig`` (950ce7d9f642).
* Several cleanups in repository's session management have been conducted
resulting from changes introduced in 3.19 release.
-
-Removals
---------
-
* Support for 'https-url' configuration option has been removed
(4516c3956d46).