remove: remove stats/base/snanmax

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

BREAKING CHANGE: remove `stats/base/snanmax`

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

Ref: #4797

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
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  - task: lint_c_src
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  - task: lint_c_examples
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  - task: lint_c_benchmarks
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  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: na
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: aayush0325