Remove unused variables reported by compiler #103
Description
When compiling SELF with warning flags enabled ( cmake -DCMAKE_BUILD_TYPE=debug), there are a number of subroutines that are identified as having declared but unused variables. In most cases these ought to be removed. In some cases, this is intentional; e.g. for our template routines that perform no action unless overridden by the end user.
We need some help cleaning this up.
Anyone who wants to tackle this will be given a free account on Fluid Numerics Galapagos cluster.