pom cleanup (#1810)

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

Author: zeitlinger

pom.xml

@@ -12,7 +12,6 @@
     <relativePath>prometheus-metrics-parent/pom.xml</relativePath>
   </parent>
 
-  <version>1.5.0-SNAPSHOT</version>
   <artifactId>client_java</artifactId>
 
   <name>Prometheus Metrics Library</name>
@@ -370,11 +369,6 @@
 
   <reporting>
     <plugins>
-      <plugin>
-        <!-- maven-site-plugin 3.3 requires maven-project-info-reports-plugin < 3.0 -->
-        <artifactId>maven-project-info-reports-plugin</artifactId>
-        <version>3.9.0</version>
-      </plugin>
       <plugin>
         <artifactId>maven-javadoc-plugin</artifactId>
         <reportSets>