[rocm-libraries] ROCm/rocm-libraries#7847 (commit b995ef2)

[CK] Remove IsPackedTensor function

## Motivation

Fix codegen hipRTC

## Technical Details

Remove not needed function. Since MakeArgument supports long_index_t
strides.

## Test Plan

Codegen tests.

## Test Result

Passed.

## Submission Checklist

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