Remove commons-io dependency

Policy parent has this declaration to the latest 2.7
version of commons-io which fixes a sonatype security
issue. There is no reason that drools-pdp should be
declaring this.

Issue-ID: POLICY-2798
Change-Id: Ie7dbe14458be4ead395dfcbebbc1c0cd3ccc4ea6
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
diff --git a/pom.xml b/pom.xml
index 30bd0cd..2492c83 100644
--- a/pom.xml
+++ b/pom.xml
@@ -50,7 +50,6 @@
         <json.path.version>2.4.0</json.path.version>
         <hibernate.core.version>5.4.18.Final</hibernate.core.version>
         <hibernate.commons.annotations.version>5.0.1.Final</hibernate.commons.annotations.version>
-        <commons.io.version>2.5</commons.io.version>
         <xml.apis.version>1.4.01</xml.apis.version>
         <policy.common.version>1.7.1-SNAPSHOT</policy.common.version>
         <policy.models.version>2.3.1-SNAPSHOT</policy.models.version>
@@ -109,11 +108,6 @@
                 <version>${hibernate.commons.annotations.version}</version>
             </dependency>
             <dependency>
-                <groupId>commons-io</groupId>
-                <artifactId>commons-io</artifactId>
-                <version>${commons.io.version}</version>
-            </dependency>
-            <dependency>
                 <groupId>xml-apis</groupId>
                 <artifactId>xml-apis</artifactId>
                 <version>${xml.apis.version}</version>