remove: remove stats/base/dcumax

This commit removes `@stdlib/stats/base/dcumax` in favor of
`@stdlib/stats/strided/dcumax`.

BREAKING CHANGE: remove `stats/base/dcumax`

To migrate, users should update their require/import paths to use
`@stdlib/stats/strided/dcumax` which provides the same API and implementation.

Ref: stdlib-js#4797

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
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---