baq: Clean up LMEM path ifdefs
baq: Clean up LMEM path ifdefs

Disable compilation of the LMEM path entirely rather than just not
using it.

broadinstitute/firepony,broadinstitute/firepony,NVlabs/firepony,broadinstitute/firepony,NVlabs/firepony,broadinstitute/firepony,NVlabs/firepony,NVlabs/firepony