Remove Height and Length from Plates

[Koeng101]

Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
Remove height and length from Plates object. This information can all be derived from the plate_form (and so far, for all objects in our database, there is a height of 8 and length of 12, and will be in the foreseeable future).

Any plate_form ending with 96 is height 8 length 12, and plate_form ending with 384 is height 16 length 24, any plate_form ending with 8 is height 8 length 1, and microcentrifuge2ml is height 1 length 1. These can all be hard coded, and used wherever height and length are currently used. This should simplify the importation of plates, and make it less error prone for users.

Describe alternatives you've considered

Anything else?
Didn't want to add these into another pull request because I generally don't want to do any model updates until I get more familiar with deployment methods.

[vsoch]

This likely needs to be done in the future after more careful thought about refactoring - the height and length are currently used not only to generate wells, but also are input fields for the import. I'm worried about removing them now when there are so many moving parts... once we migrate, if it was a mistake, it would be hugely dire.

[vsoch]

And if they otherwise are harmless to stay for now, there isn't any dire need for this change.

[vsoch]

Thinking more about this - it makes me uneasy because it would place a forever future dependency on defining dimensions associated with plate names into the databases, instead of just inputting a length and height. Supporting height and length allows for all future (different!) formats of plates, while hard coding the dimensions we know now does not.

[Koeng101]

Fair enough for possibility of breaking things.

I think the future dependency isn't actually a big deal - plates are pretty well defined and standardized https://en.wikipedia.org/wiki/Microplate (there is literally ANSI standards for it), and our lab (and most labs) only use 1 size universally. I think it's far more probable that someone inputs something wrong (height 12, length 8, for example) than someone have a plate outside of the standards.