Revert "Still include simd.h from math.h"
Revert "Still include simd.h from math.h"

This reverts commit 3f00035094d4aca44724d12b878a087c210f4365.

ukoeln-vis/ctpperf,szellmann/visionaray,ukoeln-vis/ctpperf,szellmann/visionaray