commons.log: inherit the depends-maven-plugin version from master

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1770443 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 61c9e21..a51aa97 100644
--- a/pom.xml
+++ b/pom.xml
@@ -176,7 +176,6 @@
       <plugin>
         <groupId>org.apache.servicemix.tooling</groupId>
         <artifactId>depends-maven-plugin</artifactId>
-        <version>1.2</version>
         <executions>
           <execution>
             <id>generate-depends-file</id>