cleanup dependencies in maven-scm-provider-accurev

    <dependency>
      <groupId>org.codehaus.plexus</groupId>
      <artifactId>plexus-cli</artifactId>
      <version>1.4</version>
    </dependency>
    <dependency>
      <groupId>commons-lang</groupId>
      <artifactId>commons-lang</artifactId>
      <version>2.4</version>
    </dependency>