[Observability][Streams] Remove k-v processor from streams (#2877)

This PR closes #2876

Author: mdbirnstiehl

solutions/observability/logs/streams/management/extract.md

@@ -26,7 +26,6 @@ To add a processor:
     - [Date](./extract/date.md)
     - [Dissect](./extract/dissect.md)
     - [Grok](./extract/grok.md)
-    - [Key-Value (KV)](./extract/key-value.md)
     - GeoIP
     - Rename
     - Set

solutions/observability/logs/streams/management/extract/key-value.md

@@ -422,7 +422,6 @@ toc:
                 - file: observability/logs/streams/management/extract/date.md
                 - file: observability/logs/streams/management/extract/dissect.md
                 - file: observability/logs/streams/management/extract/grok.md
-                - file: observability/logs/streams/management/extract/key-value.md
             - file: observability/logs/streams/management/retention.md
             - file: observability/logs/streams/management/advanced.md
       - file: observability/incident-management.md
@@ -500,7 +499,7 @@ toc:
       - file: security/ai.md
         children:
           - file: security/ai/ease/ease-intro.md
-            children: 
+            children:
               - file: security/ai/ease/ease-alerts.md
               - file: security/ai/ease/ease-value-report.md
               - file: security/ai/ease/ease-upgrade.md