Removed duplicate, inconsistent and spurious comments in .C files

...ssibleThreePhaseMixture/incompressibleThreePhaseMixture.C

...Mesh/cellShapeControl/cellShapeControl/cellShapeControl.C

...s/utilities/mesh/manipulation/polyDualMesh/meshDualiser.C

...ataConversion/foamToEnsightParts/ensightOutputFunctions.C

applications/utilities/surface/surfaceClean/collapseEdge.C

src/OSspecific/POSIX/POSIX.C

...AM/algorithms/dynamicIndexedOctree/dynamicTreeDataPoint.C

src/OpenFOAM/db/regIOobject/regIOobject.C

src/OpenFOAM/dimensionSet/dimensionSets.C

...tions/patchToPatchInterpolation/PatchToPatchInterpolate.C

...meshes/polyMesh/mapPolyMesh/mapDistribute/mapDistribute.C

...olyMesh/mapPolyMesh/mapDistribute/mapDistributePolyMesh.C

...lyMesh/mapPolyMesh/mapDistribute/mapDistributeTemplates.C

src/OpenFOAM/meshes/polyMesh/polyMesh.C

src/OpenFOAM/meshes/polyMesh/polyMeshCheck/polyMeshCheck.C

src/OpenFOAM/meshes/polyMesh/polyMeshFromShapeMesh.C

...esh/polyPatches/constraint/oldCyclic/oldCyclicPolyPatch.C

...esh/polyPatches/constraint/processor/processorPolyPatch.C

...esh/polyPatches/constraint/processor/processorPolyPatch.H

...hes/constraint/processorCyclic/processorCyclicPolyPatch.C