Update README.md

Author: witold-swierzy

data-platform/autonomous-database/autonomous-json/oracle-api-for-mongodb-demos/sql/po/README.md

@@ -18,8 +18,6 @@
 - Partitioning and Indexing JSON Collections
 ### JSON Dataguide
 - Creating Views using DATA_GUIDE. Views from Path Expressions
-### OLTP Compression for JSON Data
-- Creating JSON Collection Tables using COMPRESSION MEDIUM and COMPRESSION HIGH 
 ### JSON Schema
 - Generating JSON schemas with data guide
 - Generating JSON schemas with BMS_JSON_SCHEMA.describe
@@ -30,4 +28,4 @@
 ### Loading JSON Collections 
 - Using External Tables 
 - Using Object Storage
-   
+