fix: removes COMPRESSED row format from openedx_learning core

[pomegranited]

Description

AWS Aurora does not support COMPRESSED in its MySQL implementation:

https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Migrating.RDSMySQL.Import.html

Other information

As requested by @ormsbee : https://github.com/openedx/openedx-learning/pull/65#issuecomment-1643019023

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