Remove ElasticSearch setting for PHPUnit config

.env.local.example

@@ -1,3 +1,4 @@
+# Local env file assumes Sail is in use. See docker-compose.yml.
 APP_NAME=kcal
 APP_ENV=local
 APP_KEY=

phpunit.xml.dist

@@ -30,8 +30,5 @@
         <!-- @todo Figure out how to do MySQL parallel testing inside Sail. -->
         <server name="DB_CONNECTION" value="sqlite"/>
         <server name="DB_DATABASE" value=":memory:"/>
-
-        <!-- Configuration below assumes tests are running from Sail. -->
-        <server name="ELASTIC_HOST" value="elasticsearch:9200"/>
     </php>
 </phpunit>