Remove warning from docs main page.

docs/source/index.rst

@@ -41,15 +41,7 @@
 
 Mosaic is an extension to the `Apache Spark <https://spark.apache.org/>`_ framework that allows easy and fast processing of very large geospatial datasets.
 
-.. warning::
-    From versions after 0.3.x, Mosaic will require either
-     * Databricks Runtime 11.2+ with Photon enabled
-     * Databricks Runtime for ML 11.2+
-
-    Mosaic 0.3 series does not yet support DBR 13 (coming soon); 
-    also, DBR 10 is no longer supported in Mosaic. 
-
-We currently recommend using Databricks Runtime versions 11.3 LTS or 12.2 LTS with Photon enabled; 
+We currently recommend using Databricks Runtime with Photon enabled;
 this will leverage the Databricks H3 expressions when using H3 grid system. 
 
 Mosaic provides: