Clark Boylan 2d43f9322b Remove python3.7-bullseye docker images
Everything is running on 3.8 or newer which should allow us to remove
the 3.7 images. This reduces the total set before we add python3.10
images and acts as good cleanup.

Change-Id: I2cc02fd681485f35a1b0bf1c089a12a4c5438df3
2022-04-18 13:42:30 -07:00
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