chore(docs): remove mention about samples README (#1163) (#474)

Fixes googleapis/java-logging#586.
Since no java repos have README in samples/ subfolder, we remove the mentioning from README
Source-Link: googleapis/synthtool@82fe6d9
Post-Processor: gcr.io/repo-automation-bots/owlbot-java:latest@sha256:7384f9f7e64785e8d765266519fe217f3b7ab15837326e5bda548b23dc16aeeb

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -1,3 +1,3 @@
 docker:
   image: gcr.io/repo-automation-bots/owlbot-java:latest
-  digest: sha256:b3f8a219abf58ed4a775da5b90934b34f477b74f6f4e5d15781694dcc67b6f41
+  digest: sha256:7384f9f7e64785e8d765266519fe217f3b7ab15837326e5bda548b23dc16aeeb

README.md

@@ -65,8 +65,7 @@ use this Cloud BigQuery Connection Client Library.
 
 ## Samples
 
-Samples are in the [`samples/`](https://github.com/googleapis/java-bigqueryconnection/tree/master/samples) directory. The samples' `README.md`
-has instructions for running the samples.
+Samples are in the [`samples/`](https://github.com/googleapis/java-bigqueryconnection/tree/master/samples) directory.
 
 | Sample                      | Source Code                       | Try it |
 | --------------------------- | --------------------------------- | ------ |