fix bug 501: remove aggressive mat/scalar optimization (was replaced by mat*(1/scalar) for non integer types)
fix bug 501: remove aggressive mat/scalar optimization (was replaced by mat*(1/scalar) for non integer types)

pasuka/eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,ritsu1228/eigen,TSC21/Eigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,toastedcrumpets/eigen,ritsu1228/eigen,pasuka/eigen,toastedcrumpets/eigen,toastedcrumpets/eigen,Zefz/eigen,pasuka/eigen,ritsu1228/eigen,TSC21/Eigen,TSC21/Eigen,ROCmSoftwarePlatform/hipeigen,TSC21/Eigen,Zefz/eigen,ROCmSoftwarePlatform/hipeigen,Zefz/eigen,pasuka/eigen,Zefz/eigen,toastedcrumpets/eigen