Remove unnecessary GWT prop

Change-Id: I06458c08acc3d61c6066db63be514825ebd99cc0
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>
diff --git a/pom.xml b/pom.xml
index 866b1a2..edd010e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,6 @@
     <properties>
         <Gerrit-ApiType>plugin</Gerrit-ApiType>
         <Gerrit-ApiVersion>2.14</Gerrit-ApiVersion>
-        <GWT-Version>2.8.0</GWT-Version>
     </properties>
 
     <build>