Remove build agent plugin

The build agent plugin is very trivial. It is really only there is
simplify sending a service message to trigger the service message event.

This can be achieved in other ways, and therefore removes the need for
Build Agents to download the plugin and restart themselves.

For large installations with many cloud agents, this
connect/download/restart/reconnect process happens for every agent and
some agents only do one build and then shutdown.

pom.xml

@@ -89,7 +89,6 @@
 	<modules>
 		<module>tcwebhooks-core</module>
 		<module>tcwebhooks-rest-api</module>
-		<module>tcwebhooks-agent</module>
 		<module>tcwebhooks-web-ui</module>
 	</modules>
 

tcwebhooks-web-ui/pom.xml

@@ -119,7 +119,6 @@
 						<echo message="Attempting to build dist-core zip file" />
 						<mkdir dir="${project.build.directory}/dist-core" />
 						<mkdir dir="${project.build.directory}/dist-core/server" />
-						<mkdir dir="${project.build.directory}/dist-core/agent" />
 
 						<echo message=" - Copying resources to dist-core" />
 						<copy todir="${project.build.directory}/dist-core/">
@@ -135,13 +134,6 @@
 		    				  </fileset>
 		    			</copy>
 
-						<echo message=" - Copying dep jar to dist-core/agent" />
-						<copy todir="${project.build.directory}/dist-core/agent/">
-							  <fileset dir="${project.build.directory}/../../tcwebhooks-agent/target/">
-		    						<include name="agent-tcWebHooks-${version}.zip" />
-		    				  </fileset>
-		    			</copy>
-
 		    			<echo message=" - Creating core ZIP file" />
 		    			<zip destfile="${project.build.directory}/tcWebHooks-${version}.zip" 
 		    				 basedir="${project.build.directory}/dist-core"