Replace outdated link in README

patch by April Murphy; reviewed by Bret McGuire and Lukasz Antoniak
reference: https://github.com/apache/cassandra-java-driver/pull/2064
diff --git a/README.md b/README.md
index 0f6c2bb..5994a4b 100644
--- a/README.md
+++ b/README.md
@@ -67,10 +67,6 @@
 
 See the [upgrade guide](upgrade_guide/) for details.
 
-## Error Handling
-
-See the [Cassandra error handling done right blog](https://www.datastax.com/blog/cassandra-error-handling-done-right) for error handling with the Java Driver for Apache Cassandra™.
-
 ## Useful links
 
 * [Manual](manual/)