tutorials: Removed 0.orig directories in favor of <field>.orig

The new automated <field>.orig reading has made 0.orig directories and
associated scripting redundant.

tutorials/multiphase/interPhaseChangeDyMFoam/propeller/Allclean

@@ -9,6 +9,7 @@ rm -f constant/triSurface/propellerTip.obj.gz > /dev/null 2>&1
 
 cleanCase
 
-rm -rf 0 > /dev/null 2>&1
 rm -rf constant/extendedFeatureEdgeMesh > /dev/null 2>&1
 rm -f constant/triSurface/*.eMesh* > /dev/null 2>&1
+
+#------------------------------------------------------------------------------