STYLE: directMappedVelocityFluxFixedValue : updated comment

src/finiteVolume/fields/fvPatchFields/derived/directMappedVelocityFluxFixedValue/directMappedVelocityFluxFixedValueFvPatchField.H

@@ -27,7 +27,6 @@ Class
 Description
     Recycles the velocity and flux at a patch to this patch
 
-    mode = NEARESTCELL : sample nearest cell
     mode = NEARESTPATCHFACE : sample nearest face on selected patch
     mode = NEARESTFACE : sample nearest face on any patch. Note: does not
                          warn if nearest actually is on internal face!