Remove gammapy.extern.validator and validate_physical_type #2197
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This PR removes
gammapy.extern.validator
. The only function from there that we used wasvalidate_physical_type
. I replaced this with a call toQuantity
inpsf_gauss.py
, just like I already did forgammapy.astro
earlier today in #2192 .This brings us towards internal consistency for quantity handling in Gammapy, we already were using
Quantity
, notvalidate_physical_type
in 99% of our code.I'm sure there are many places in Gammapy where we should improve unit and quantity handling. But I believe Astropy core has good solutions for this since many years, and a separate
gammapy.extern.validator
is not the way to go.Discussed offline with @adonath who agreed - so I'll merge this right away as a small cleanup PR without discussion.