_dynamic_scaled() causing issues with H0 and L0 data

Created by: dethodav

While investigating data normalization issues for the public summary pages, I noticed that at least some H0 and L0 data no longer require ADC scaling, similar to the H1 and L1 channels. Hence, the default behavior when using framecpp is to mis-scale the data. To resolve this, either _dynamic_scaling should get removed and the default scaled value should always be set to False or there should be a date-related switch to account for the change in ADC scaling.

I will note that I haven't extensively checked all H0 and L0 channels, only the temperature channels shown on the summary pages. The scaling of these channels changed in Sept 2020, corresponding to a CDS upgrade at the sites. More checks may be needed before we decide how to resolve this issue.

@duncanmmacleod @eagoetz