Remove some problematic inline annotations.
Remove some problematic inline annotations.

These functions started producing invalid results in CUDA 11 under
certain circumstances (see issue NVIDIA/thrust#1371), and removing
these hints fixes the issue.

NVIDIA/cub#260 reported that other functions in this file were also
causing the same issue.

These methods are not perf critical -- they don't need to be inlined.

NVIDIA/cub,NVlabs/CUB,NVlabs/cub