Remove extrapolation order from config

Author: davidscn

multiple-perpendicular-flaps/precice-config.xml

@@ -105,7 +105,6 @@
     <relative-convergence-measure limit="1e-4" data="Displacement-Upstream" mesh="Solid-Upstream-Mesh" />
     <relative-convergence-measure limit="1e-4" data="Stress-Downstream" mesh="Fluid-Downstream-Mesh-Centers" />
     <relative-convergence-measure limit="1e-4" data="Displacement-Downstream" mesh="Solid-Downstream-Mesh" />
-    <extrapolation-order value="2" />
     <acceleration:IQN-ILS>
       <data name="Displacement-Upstream" mesh="Solid-Upstream-Mesh" />
       <data name="Displacement-Downstream" mesh="Solid-Downstream-Mesh" />

turek-hron-fsi3/precice-config.xml

@@ -60,7 +60,6 @@
     <max-iterations value="100" />
     <relative-convergence-measure limit="1e-4" data="Stress" mesh="Fluid-Mesh-Centers" />
     <relative-convergence-measure limit="1e-4" data="Displacement" mesh="Solid-Mesh" />
-    <extrapolation-order value="2" />
     <acceleration:IQN-ILS>
       <data name="Displacement" mesh="Solid-Mesh" />
       <data name="Stress" mesh="Fluid-Mesh-Centers" />