Remove searching for TBB in embree-config.cmake #1
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Having
FIND_PACKAGE(TBB)
inembree-config.cmake
adds an unnecessary constraint - namely that users now needs TBB development files on their system to use Embree. In environments with shared libraries like e.g. classic linux distributions, a user might have the TBB shared libraries for Embree installed but not the developments files. Any component checks should only happen during build time of Embree.Closes RenderKit#401
/cc @sherholz-intel @svenwoop