MAINT: removed core_py (including tests and benchmarks)
Description
As discussed in #126 (closed), core_py should be removed from master and only kept in a dedicated branch (python-based-core).
Summary of changes
- removed
icet/core_py - removed references to modules in
core_pyfrom other places inicet(exclusively pertains toLatticeSite_py) - removed
core_pyreferences fromtests - removed
core_pyreferences frombenchmarks - cleaned up code and
README.mdinbenchmarks
Closes #292 (closed)