update span lifecycle

Author: Shannon Anahata

docs/platforms/python/tracing/span-lifecycle/index.mdx

@@ -125,10 +125,6 @@ with sentry_sdk.start_transaction(name="Background Task", op="task") as transact
         pass
 ```
 
-## Distributed Tracing
-
-See <PlatformLink to="/tracing/distributed-tracing/">Distributed Tracing</PlatformLink> for details on how to propagate trace information across different services or applications. 
-
 ## Improving Span Data
 
 ### Adding Span Attributes