contiguous flag

In lagrangian there are various occurrences of making a specialisation of contiguous(), returning false:

coalCombustion/coalParcel/coalParcel.H intermediate/parcels/derived/basicReactingMultiphaseParcel/basicReactingMultiphaseParcel.H intermediate/parcels/derived/basicReactingParcel/basicReactingParcel.H spray/parcels/derived/basicSprayParcel/basicSprayParcel.H

The default template function returns false so they're not needed.