Remove unsupported flag and fix formatting

Author: sylwiaszunejko

docs/scylla-specific.rst

@@ -75,37 +75,6 @@ New Cluster Helpers
         print("successfully connected to all shards of all scylla nodes")
 
 
-New Table Attributes
---------------------
-
-* ``in_memory`` flag
-
-  New flag available on ``TableMetadata.options`` to indicate that it is an `In Memory <https://docs.scylladb.com/using-scylla/in-memory/>`_ table
-
-.. note::  in memory tables is a feature existing only in Scylla Enterprise
-
-.. code:: python
-
-    from cassandra.cluster import Cluster
-
-    cluster = Cluster()
-    session = cluster.connect()
-    session.execute("""
-        CREATE KEYSPACE IF NOT EXISTS keyspace1
-        WITH replication = {'class': 'SimpleStrategy', 'replication_factor': '1'};
-    """)
-
-    session.execute("""
-        CREATE TABLE IF NOT EXISTS keyspace1.standard1 (
-            key blob PRIMARY KEY,
-            "C0" blob
-        ) WITH in_memory=true AND compaction={'class': 'InMemoryCompactionStrategy'}
-    """)
-
-    cluster.refresh_table_metadata("keyspace1", "standard1")
-    assert cluster.metadata.keyspaces["keyspace1"].tables["standard1"].options["in_memory"] == True
-
-
 New Error Types
 --------------------
 

docs/upgrading.rst

@@ -91,7 +91,7 @@ DC-aware load balancing policy and to match other drivers.
 Execution API Updates
 ^^^^^^^^^^^^^^^^^^^^^
 Result return normalization
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---------------------------
 `PYTHON-368 <https://datastax-oss.atlassian.net/browse/PYTHON-368>`_
 
 Previously results would be returned as a ``list`` of rows for result rows
@@ -129,7 +129,7 @@ This can send requests and load (possibly large) results into memory, so
 `~.ResultSet` will log a warning on implicit materialization.
 
 Trace information is not attached to executed Statements
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------------------------------
 `PYTHON-318 <https://datastax-oss.atlassian.net/browse/PYTHON-318>`_
 
 Previously trace data was attached to Statements if tracing was enabled. This
@@ -147,7 +147,7 @@ returned for each query:
 :meth:`.ResultSet.get_all_query_traces()`
 
 Binding named parameters now ignores extra names
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+------------------------------------------------
 `PYTHON-178 <https://datastax-oss.atlassian.net/browse/PYTHON-178Cassadfasdf>`_
 
 Previously, :meth:`.BoundStatement.bind()` would raise if a mapping