SLING-5681 commons-io is now used not only in test classes

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1784085 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index e102590..4e96c8c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -100,7 +100,6 @@
       <groupId>commons-io</groupId>
       <artifactId>commons-io</artifactId>
       <version>2.4</version>
-      <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.apache.commons</groupId>