use_lai_streams on for BGC test?

### Brief summary of bug

`use_lai_streams = .true.` is set for a `I2000Clm50BgcCru` test. This is now throwing a runtime error in my [new use_lai_streams ](https://github.com/ESCOMP/CTSM/pull/2054) branch.

### General bug information

In my new use FATES lai streams [PR](https://github.com/ESCOMP/CTSM/pull/2054), I added a check to make sure `use_lai_streams` can only be on if `use_cn = .false.` or `use_fates_sp = .true.`.

However, this now causes a runtime fail for `SMS_Ld1_PS.f09_g17.I2000Clm50BgcCru.cheyenne_gnu.clm-datm_bias_correct_cruv7` [test ](https://github.com/ESCOMP/CTSM/blob/942de5c248d891cbde945a2c8c27a01af697bc86/cime_config/testdefs/testlist_clm.xml#L1605).

As this is a BGC run, I'm not sure why `use_lai_streams = .true.` is set in the `user_nl_clm` file. @ekluzek is this intended? or can I remove?

**CTSM version you are using:** `ctsm5.1.dev133`

**Does this bug cause significantly incorrect results in the model's science?** No

**Configurations affected:** 1 aux_clm test