prune old large files from git history

[matthewhanson]

Is your feature request related to a problem? Please describe.
I noticed today when cloning the stactools repo it was getting sizable. It's 32MB, of which 8MB is the main branch (large files are in the test directory)

Describe the solution you'd like
Prune out old large files from the git history, I suspect at least some of these files are old test files

Describe alternatives you've considered
Live with it, which is fine - this is not critical, you can always do shallow clones. However I think that with the codebase largely stabilized now the old files can be pruned from the tree safely and will result in a leaner repo when cloning

[gadomski]

I'm a little wary of modifying public git history. 32MB doesn't seem that big to me in the grand scheme of things for a geospatial repo, and since we are maturing, most users will be pip-installing from a tagged release anyways?

If we were going to, it looks like this culprit is obvious (I used this):

56539fcf32b1  7.1MiB tests/data-files/sentinel2/S2B_MSIL2A_20191228T210519_N0212_R071_T01CCV_20201003T104658.SAFE/DATASTRIP/DS_ESRI_20201003T104659_S20191228T210521/MTD_DS.xml
343fb87cec25   13MiB tests/data-files/sentinel2/S2A_MSIL2A_20190212T192651_N0212_R013_T07HFE_20201007T160857.SAFE/DATASTRIP/DS_ESRI_20201007T160858_S20190212T192646/MTD_DS.xml
446fb4bf5ec8   18MiB tests/data-files/sentinel2/esa_S2B_MSIL2A_20210122T133229_N0214_R081_T22HBD_20210122T155500.SAFE/DATASTRIP/DS_VGS2_20210122T155500_S20210122T133224/MTD_DS.xml

These files were removed when we split out the packages: 1fb527f.