remove group constrainte, it's now a normal group

tests/dictionaries_old/80leadership_accent/00-base.xml

@@ -0,0 +1,29 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<rougail version="0.9">
+  <variables>
+    <family name="general">
+      <variable name="mode_conteneur_actif" type="string" description="No change">
+        <value>non</value>
+      </variable>
+    </family>
+    <family name="general1">
+      <variable name="leader" type="string" multi="True"/>
+      <variable name="Followér1" type="string"/>
+      <variable name="Followér2" type="string"/>
+    </family>
+  </variables>
+  <constraints>
+    <fill name="calc_val">
+      <param name="valeur">valfill</param>
+      <target>follower1</target>
+    </fill>
+    <fill name="calc_val">
+      <param type="variable">Followér1</param>
+      <target>follower2</target>
+    </fill>
+    <group leader="leader">
+      <follower>Followér1</follower>
+      <follower>Followér2</follower>
+    </group>
+  </constraints>
+</rougail>