refactor: remove previous troubleshooter_java_dependency region tag (#10278)

Author: Kef131

iam/api-client/pom.xml

@@ -79,12 +79,10 @@
     </dependency>
     <!-- [END iamcredentials_java_dependency]-->
     <!-- [START iam_policytroubleshooter_java_dependency]-->
-    <!-- [START troubleshooter_java_dependency]-->
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-policy-troubleshooter</artifactId>
     </dependency>
-    <!-- [END troubleshooter_java_dependency]-->
     <!-- [END iam_policytroubleshooter_java_dependency]-->
 
     <!-- Test dependencies -->