DOC: se3_log_map does not highlight that eps and cos_bound are unused

[tvercaut]

Reading through the documentation for se3_log_map, I was under the impression that eps and cos_bound were important for numerical stability:

pytorch3d/pytorch3d/transforms/se3.py

Lines 142 to 147 in 43cd681

	eps: A threshold for clipping the squared norm of the rotation logarithm
	to avoid division by zero in the singular case.
	cos_bound: Clamps the cosine of the rotation angle to
	[-1 + cos_bound, 3 - cos_bound] to avoid non-finite outputs.
	The non-finite outputs can be caused by passing small rotation angles
	to the `acos` function in `so3_rotation_angle` of `so3_log_map`.

However, following #1609 and 292acc7 it appeared that eps and cos_bound are only retained for backwards compatibility in so3_log_map (Note the o instead of e). This is made clear in the corresponding documentation:

pytorch3d/pytorch3d/transforms/so3.py

Lines 184 to 185 in 43cd681

	eps: (unused, for backward compatibility)
	cos_bound: (unused, for backward compatibility)

Now, given that se3_log_map calls so3_log_map,

pytorch3d/pytorch3d/transforms/se3.py

Line 173 in 43cd681

log_rotation = so3_log_map(R, eps=eps, cos_bound=cos_bound)

I believe the deprecation of eps and cos_bound should also be highlighted in teh documentation of se3_log_map.