ENH: mixerVessel: undo rotation of decomposition

tutorials/mesh/foamyHexMesh/mixerVessel/system/decomposeParDict

@@ -30,8 +30,7 @@ simpleCoeffs
 hierarchicalCoeffs
 {
     n               ( 2 2 2 );
-    delta           0.2;    // rotate a bit to avoid baffle topology
-                            // at processor boundary
+    delta           0.001;
     order           xyz;
 }