Docs: removed reference to update pg_class
@@ -149,11 +149,6 @@ Segment 12 - gpfdist 4</screen></p>
<codeph>gp_autostats_mode</codeph> configuration parameter to
<codeph>NONE</codeph>.</li>
<li>External tables are not intended for frequent or ad hoc access.</li>
- <li>External tables have no statistics to inform the optimizer. You can set rough estimates
- for the number of rows and disk pages for the external table in the
- <codeph>pg_class</codeph> system catalog with a statement like the
- following:<codeblock>UPDATE pg_class SET reltuples=400000, relpages=400
-WHERE relname='myexttable';</codeblock></li>
<li>When using <codeph>gpfdist</codeph>, maximize network bandwidth by running one
<codeph>gpfdist</codeph> instance for each NIC on the ETL server. Divide the source data
evenly between the <codeph>gpfdist</codeph> instances.</li>
