Taking out option that sets vcmax25top etc to zero in the case of no …

[rgknox]

This is a cherry-pick of: NorESMhub#54

Issued by @maritsandstad and @mvertens, with help from @mvdebolskiy, @rgknox and @rosiealice

See issue:
NorESMhub/CTSM#200

All checklist items must be checked to enable merging this pull request:

Contributor

• The in-code documentation has been updated with descriptive comments
• The documentation has been assessed to determine if updates are necessary

Integrator

• FATES PASS/FAIL regression tests were run
• Evaluation of test results for answer changes was performed and results provided
• FATES-CLM6 Code Freeze: satellite phenology regression tests are b4b

If satellite phenology regressions are not b4b, please hold merge and notify the FATES development team.

Documentation

• Technical Note update:
• User's Guide update:

Test Results:

CTSM (or) E3SM (specify which) test hash-tag:

CTSM (or) E3SM (specify which) baseline hash-tag:

FATES baseline hash-tag:

Test Output:

[rgknox]

running tests: /.../tests_0323-184529de
Tests pass, SP B4B, expected diffs on other baselines