Deduplicate `print_backend_info`.

[bbpbuildbot]

Logfiles from GitLab pipeline #213545 (:white_check_mark:) have been uploaded here!

Status and direct links:

• :white_check_mark: spack_setup
• :white_check_mark: build:intel
• :white_check_mark: build:nvhpc
• :white_check_mark: test:intel
• :white_check_mark: test:nvhpc

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 86.23%. Comparing base (341b89e) to head (c3b6c14).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1284 +/- ## ========================================== - Coverage 86.24% 86.23% -0.02% ========================================== Files 178 178 Lines 13299 13283 -16 ========================================== - Hits 11470 11454 -16 Misses 1829 1829 ```

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