Change toolkit plugin test to release version (#5762)

Co-authored-by: NMrproliu <mrproliu@lagou.com>

test/plugin/scenarios/apm-toolkit-trace-scenario/pom.xml

@@ -62,7 +62,7 @@
         <dependency>
             <groupId>org.apache.skywalking</groupId>
             <artifactId>apm-toolkit-meter</artifactId>
-            <version>8.2.0-SNAPSHOT</version>
+            <version>8.2.0</version>
         </dependency>
     </dependencies>
 
@@ -120,12 +120,4 @@
             <url>http://repo.spring.io/milestone</url>
         </pluginRepository>
     </pluginRepositories>
-
-    <repositories>
-        <repository>
-            <id>apache-snapshot</id>
-            <name>Apache Snapshot</name>
-            <url>https://repository.apache.org/content/repositories/snapshots</url>
-        </repository>
-    </repositories>
 </project>
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