revert policyinsights for release (Azure#20880)

eng/versioning/version_client.txt

@@ -259,7 +259,7 @@ com.azure.resourcemanager:azure-resourcemanager-machinelearningservices;1.0.0-be
 com.azure.resourcemanager:azure-resourcemanager-mariadb;1.0.0-beta.1;1.0.0-beta.2
 com.azure.resourcemanager:azure-resourcemanager-servicefabric;1.0.0-beta.1;1.0.0-beta.2
 com.azure.resourcemanager:azure-resourcemanager-peering;1.0.0-beta.1;1.0.0-beta.2
-com.azure.resourcemanager:azure-resourcemanager-policyinsights;1.0.0-beta.1;1.0.0-beta.2
+com.azure.resourcemanager:azure-resourcemanager-policyinsights;1.0.0-beta.1;1.0.0-beta.1
 com.azure.resourcemanager:azure-resourcemanager-support;1.0.0-beta.1;1.0.0-beta.2
 com.azure.resourcemanager:azure-resourcemanager-subscription;1.0.0-beta.1;1.0.0-beta.2
 com.azure.resourcemanager:azure-resourcemanager-powerbidedicated;1.0.0-beta.1;1.0.0-beta.2

sdk/policyinsights/azure-resourcemanager-policyinsights/CHANGELOG.md

@@ -1,8 +1,5 @@
 # Release History
 
-## 1.0.0-beta.2 (Unreleased)
-
-
-## 1.0.0-beta.1 (2021-04-19)
+## 1.0.0-beta.1 (2021-04-22)
 
 - Azure Resource Manager PolicyInsights client library for Java. This package contains Microsoft Azure SDK for PolicyInsights Management SDK.  Package tag package-2021-01. For documentation on how to use this package, please see [Azure Management Libraries for Java](https://aka.ms/azsdk/java/mgmt).

sdk/policyinsights/azure-resourcemanager-policyinsights/pom.xml

@@ -9,7 +9,7 @@
 
     <groupId>com.azure.resourcemanager</groupId>
     <artifactId>azure-resourcemanager-policyinsights</artifactId>
-    <version>1.0.0-beta.2</version> <!-- {x-version-update;com.azure.resourcemanager:azure-resourcemanager-policyinsights;current} -->
+    <version>1.0.0-beta.1</version> <!-- {x-version-update;com.azure.resourcemanager:azure-resourcemanager-policyinsights;current} -->
     <packaging>jar</packaging>
 
     <name>Microsoft Azure SDK for PolicyInsights Management</name>