STYLE: adjust tutorial Allrun scripts (issue #310)

- A few without a 'cd' at the start.
  Use $(getApplication) directly in more places (for clarity).

tutorials/multiphase/interFoam/LES/nozzleFlow2D/Allrun

@@ -4,9 +4,6 @@ cd ${0%/*} || exit 1    # Run from this directory
 # Source tutorial run functions
 . $WM_PROJECT_DIR/bin/tools/RunFunctions
 
-# Get application name
-application=$(getApplication)
-
 runApplication blockMesh
 
 for i in 1 2
@@ -18,6 +15,6 @@ do
         refineMesh -dict system/refineMeshDict -overwrite
 done
 
-runApplication $application
+runApplication $(getApplication)
 
 #------------------------------------------------------------------------------