feat(Pictograms): watson logo pictogram removed (#15221)

* feat(Pictograms): watson logo pictogram removed

* fix(pictograms): point to possible replacement picto

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Co-authored-by: Guilherme Datilio Ribeiro <guilhermedatilio@gmail.com>
Co-authored-by: TJ Egan <tw15egan@gmail.com>

packages/pictograms/deprecated.yml

@@ -7,3 +7,7 @@ deprecated:
     reason: This icon should no longer be used
   - name: ibm--z--partition
     reason: This icon should no longer be used
+  - name: watson--logo
+    reason:
+      This pictogram should no longer be used, as it represents the old avatar
+      for the Watson brand, which is retired since the watsonx brand launch.