Removed cmake/ directory with FindEigen3 script
Removed cmake/ directory with FindEigen3 script

As we now include Eigen as submodule, we're using the one (identical) under 3rdparty/eigen/cmake.

icyrizard/eos,patrikhuber/eos,patrikhuber/eos,icyrizard/eos,icyrizard/eos,patrikhuber/eos