tutorials: Simplified the Allrun and Allclean scripts

...multiphase/interFoam/laminar/damBreak/damBreak/constant/g

...am/laminar/damBreak/damBreak/constant/transportProperties

...m/laminar/damBreak/damBreak/constant/turbulenceProperties

.../interFoam/laminar/damBreak/damBreak/system/blockMeshDict

...se/interFoam/laminar/damBreak/damBreak/system/controlDict

...terFoam/laminar/damBreak/damBreak/system/decomposeParDict

...hase/interFoam/laminar/damBreak/damBreak/system/fvSchemes

...ase/interFoam/laminar/damBreak/damBreak/system/fvSolution

.../interFoam/laminar/damBreak/damBreak/system/setFieldsDict

.../multiphase/interFoam/laminar/mixerVessel2D/0/alpha.water

tutorials/multiphase/interFoam/ras/damBreak/Allclean

tutorials/multiphase/interFoam/ras/damBreak/Allrun

tutorials/multiphase/interFoam/ras/damBreak/damBreak/0/U

.../multiphase/interFoam/ras/damBreak/damBreak/0/alpha.water

...tiphase/interFoam/ras/damBreak/damBreak/0/alpha.water.org

...ials/multiphase/interFoam/ras/damBreak/damBreak/0/epsilon

tutorials/multiphase/interFoam/ras/damBreak/damBreak/0/k

...ials/multiphase/interFoam/ras/damBreak/damBreak/0/nuTilda

tutorials/multiphase/interFoam/ras/damBreak/damBreak/0/nut

tutorials/multiphase/interFoam/ras/damBreak/damBreak/0/p_rgh