DOCSP-20266: Remove bad includes to fix build error (#876)

Co-authored-by: Sarah Olson <[email protected]>

Author: sarah-olson-mongodb

source/core/timeseries/timeseries-limitations.txt

@@ -158,16 +158,6 @@ Starting in 5.0.6, you can run :ref:`sharding administration commands
 In versions earlier than MongoDB 5.0.6, you cannot run sharding
 administration commands for sharded time series collections.
 
-Shard Zones
-```````````
-
-.. include:: /includes/time-series/fact-shard-zone-limitations.rst
-
-Shard Keys
-``````````
-
-.. include:: /includes/time-series/fact-shard-key-limitations.rst
-
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