[releng] remove importmodel and architectureconcepts.application plugins from feature
  (both plugins do not exist any more)

Signed-off-by: Ansgar Radermacher <ansgar.radermacher@cea.fr>
Change-Id: I53d6742e67310f14c160a0ac6b6e37683402c139
diff --git a/core/releng/org.polarsys.esf.core.releng/feature.xml b/core/releng/org.polarsys.esf.core.releng/feature.xml
index 9f3e3ac..18014da 100644
--- a/core/releng/org.polarsys.esf.core.releng/feature.xml
+++ b/core/releng/org.polarsys.esf.core.releng/feature.xml
@@ -178,20 +178,6 @@
          unpack="false"/>
 
    <plugin
-         id="org.polarsys.esf.core.importmodel.common"
-         download-size="0"
-         install-size="0"
-         version="0.0.0"
-         unpack="false"/>
-
-   <plugin
-         id="org.polarsys.esf.core.profile.esfarchitectureconcepts.application"
-         download-size="0"
-         install-size="0"
-         version="0.0.0"
-         unpack="false"/>
-
-   <plugin
          id="org.polarsys.esf.core.resources.graphical"
          download-size="0"
          install-size="0"