[doc] Remove "newly bound" itemization (RobotLocomotion#18523)

doc/_pages/release_playbook.md

@@ -67,11 +67,10 @@ the main body of the document:
   not the "Multibody" heading.
 * Expand all acronyms (eg, MBP -> MultibodyPlant, SG -> SceneGraph).
 * Commits can be omitted if they only affect tests or non-installed examples. {% comment %}TODO(jwnimmer-tri) Explain how to check if something is installed.{% endcomment %}
-* In general you should mention new bindings and deprecated/removed classes and
-  methods using their exact name (for easier searching).
-   * In the pydrake and deprecation sections in fact you can just put the
-    fully-qualified name as the whole line item; the meaning is clear from
-    context.
+* In general you should mention deprecated/removed classes and methods using
+  their exact name (for easier searching).
+  * In the deprecation section you can provide the fully-qualified name as the
+    whole line item; the meaning is clear from context.
   * This may mean having a long list of items for a single commit.  That is
     fine.
 

doc/_pages/reviewable.md

@@ -112,6 +112,9 @@ Commits that implement a feature or a fix must be labeled with the
 corresponding tag, either ``release notes: feature`` or ``release notes: fix``
 but never both at once; choose whichever one is the best match.
 
+Commits that merely add missing pydrake bindings should be marked
+``release notes: fix``.
+
 **When combining release notes labels:**
 
 - ``none`` must not be combined with any other label.

doc/_release-notes/template.txt

@@ -95,10 +95,6 @@ Fixes
 
 * TBD
 
-Newly bound
-
-* TBD
-
 ## Build system
 
 <!-- <relnotes for cmake,doc,setup,third_party,tools go here> -->