Undoing hard-code for area in Linear Solver
Undoing hard-code for area in Linear Solver


Former-commit-id: 609c08fe565e290508067ee6658c512bf50733a7
Former-commit-id: 1cb35777010abf5b0e6b506834ecb48d9e46701c
PMEAL/OpenPNM,stadelmanma/OpenPNM,amdouglas/OpenPNM,amdouglas/OpenPNM,TomTranter/OpenPNM