This reverts commit 69985bb1.

Belongs to #208. ```noexcept(false)``` seems to be required also here.

Closes #208

Master

**AMR-MG:**
- add MueLuBottomSolver
- renaming AmesosBottomSolver --> Amesos2BottomSolver
- use Level template parameter

See merge request !31

deleted:    ippl/test/AMR/trilinos/AmrTrilinos.cpp
deleted:    ippl/test/AMR/trilinos/AmrTrilinos.h
deleted:    ippl/test/AMR/trilinos/EllipticDomain.cpp
deleted:    ippl/test/AMR/trilinos/EllipticDomain.h
deleted:    ippl/test/AMR/trilinos/IrregularDomain.h
deleted:    ippl/test/AMR/trilinos/testTrilinosGeometry.cpp