removed external tool builder

plugins/org.yakindu.sct.doc.user/.project

@@ -21,16 +21,6 @@
 			<arguments>
 			</arguments>
 		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.ui.externaltools.ExternalToolBuilder</name>
-			<triggers>full,incremental,</triggers>
-			<arguments>
-				<dictionary>
-					<key>LaunchConfigHandle</key>
-					<value>&lt;project&gt;/.externalToolBuilders/Generate_Doc.launch</value>
-				</dictionary>
-			</arguments>
-		</buildCommand>
 	</buildSpec>
 	<natures>
 		<nature>org.eclipse.pde.PluginNature</nature>