remove FakeSModelDescriptor
deleton:unused SNode and SModel methods
deleton:unused SNode and SModel methods: more complex cases
deleton:unused SNode and SModel methods: usage from MPS code
deleton:unused SNode and SModel methods: more complex cases
deleton:unused SNode and SModel methods: getConceptProperty+migration models
deleton:unused AbstractModule methods
fix MPS-18983: FakeSModelDescriptor: SNode
fixing tests: NPE and broken reference
deleton:remove migration30 model's content, fix references, make
fix NPE in tests
fix compilation in plugin
deleton: fix compilation in plugin
deleton: make after rebase