Port log4j-iostreams changes from 2.x

Author: vy

log4j-iostreams/pom.xml

@@ -23,14 +23,10 @@
     <version>${revision}</version>
     <relativePath>../log4j-parent</relativePath>
   </parent>
-
   <artifactId>log4j-iostreams</artifactId>
   <packaging>jar</packaging>
   <name>Apache Log4j Streaming Interface</name>
   <description>The Apache Log4j streams to log event converters</description>
-  <properties>
-    <log4jParentDir>${basedir}/..</log4jParentDir>
-  </properties>
   <dependencies>
     <dependency>
       <groupId>org.apache.logging.log4j</groupId>