[JXR-174] Revert JXR-157 until next major version

Downgrade to Velocity 1.7 to be consistent with Doxia Sitetools 1.11.1.

This closes #69
diff --git a/maven-jxr/pom.xml b/maven-jxr/pom.xml
index 1d005ae..6f7f72b 100644
--- a/maven-jxr/pom.xml
+++ b/maven-jxr/pom.xml
@@ -89,7 +89,8 @@
     </dependency>
     <dependency>
       <groupId>org.apache.velocity</groupId>
-      <artifactId>velocity-engine-core</artifactId>
+      <artifactId>velocity</artifactId>
+      <version>1.7</version>
     </dependency>
     <dependency>
       <groupId>org.apache.commons</groupId>
diff --git a/pom.xml b/pom.xml
index d5b9153..12e1e35 100644
--- a/pom.xml
+++ b/pom.xml
@@ -93,11 +93,6 @@
         <version>3.12.0</version>
       </dependency>
       <dependency>
-        <groupId>org.apache.velocity</groupId>
-        <artifactId>velocity-engine-core</artifactId>
-        <version>2.3</version>
-      </dependency>
-      <dependency>
         <groupId>org.codehaus.plexus</groupId>
         <artifactId>plexus-java</artifactId>
         <version>1.1.1</version>