Update license header in appc-dispatcher xml files

Modify license header in appc-dispatcher xml files to reflect 2018 changes.

Change-Id: If9df0812b1205c1edbfbdf6529d64032385cd2a4
Issue-ID: APPC-1002
Signed-off-by: John McClung <jm1364@att.com>
diff --git a/appc-dispatcher/appc-dispatcher-installer/pom.xml b/appc-dispatcher/appc-dispatcher-installer/pom.xml
index 9597581..a0cc963 100644
--- a/appc-dispatcher/appc-dispatcher-installer/pom.xml
+++ b/appc-dispatcher/appc-dispatcher-installer/pom.xml
@@ -3,7 +3,7 @@
   ============LICENSE_START=======================================================
   ONAP : APPC
   ================================================================================
-  Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+  Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
   ================================================================================
   Copyright (C) 2017 Amdocs
   =============================================================================
@@ -19,7 +19,6 @@
   See the License for the specific language governing permissions and
   limitations under the License.
 
-  ECOMP is a trademark and service mark of AT&T Intellectual Property.
   ============LICENSE_END=========================================================
   -->
 <project xmlns="http://maven.apache.org/POM/4.0.0"