activate Reproducible Builds

Author: hboutemy

pom.xml

@@ -6,7 +6,7 @@
   <parent>
     <groupId>org.codehaus.plexus</groupId>
     <artifactId>plexus</artifactId>
-    <version>5.1</version>
+    <version>6.1</version>
   </parent>
 
   <artifactId>plexus-archiver</artifactId>
@@ -32,6 +32,7 @@
 
   <properties>
     <javaVersion>7</javaVersion>
+    <project.build.outputTimestamp>2020-01-20T18:52:37Z</project.build.outputTimestamp>
   </properties>
 
   <contributors>
@@ -118,25 +119,6 @@
           </execution>
         </executions>
       </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-enforcer-plugin</artifactId>
-        <executions>
-          <execution>
-            <id>enforce-java</id>
-            <goals>
-              <goal>enforce</goal>
-            </goals>
-            <configuration>
-              <rules>
-                <requireJavaVersion>
-                  <version>1.7.0</version>
-                </requireJavaVersion>
-              </rules>
-            </configuration>
-          </execution>
-        </executions>
-      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-scm-publish-plugin</artifactId>