[rocm-libraries] ROCm/rocm-libraries#8983 (commit 80c884a)

revert(ck): magic division for long_index_t

This reverts commit c25787bf08274860e3cdd9197cd88b161752b567.

## Motivation

Memfaults problems after this implementation.

## Technical Details

revert magic division for large tensors. Return to standard division
path

## Test Plan

test_grouped_convnd_bwd_data

## Test Result

passed

## Submission Checklist

- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

JIRA ID : ROCM-27282
JIRA ID : ROCM-27360