cmake: remove unnecessary condition copies

Change-Id: Ie35d43f53c1a4c90ae15cc5b7a1ea0dac2c457a4
vtkSmartPyObject: ignore warning C4127 on MSVC

Change-Id: I816b1f16f70f237e635b1ed742039a2030804ea2
Merge topic 'ignore-constant-expr-msvc' into master

f8430aef vtkSmartPyObject: ignore warning C4127 on MSVC
b673e361 cmake: remove unnecessary condition copies