Deletes classic test related to STI
Deletes classic test related to STI

Without classic, this test would be testing that Zeitwerk works. That
belongs to the test suite of Zeitwerk.

Active Record has the class available, whether it was already loaded or
pending autoloading, is not AR's concern.

Envek/rails,yawboakye/rails,rails/rails,kddeisz/rails,georgeclaghorn/rails,BlakeWilliams/rails,lcreid/rails,lcreid/rails,Erol/rails,MSP-Greg/rails,Edouard-chin/rails,Stellenticket/rails,BlakeWilliams/rails,Edouard-chin/rails,BlakeWilliams/rails,rails/rails,yahonda/rails,yahonda/rails,yawboakye/rails,kmcphillips/rails,georgeclaghorn/rails,Erol/rails,esparta/rails,lcreid/rails,Edouard-chin/rails,MSP-Greg/rails,georgeclaghorn/rails,yahonda/rails,georgeclaghorn/rails,kmcphillips/rails,MSP-Greg/rails,Erol/rails,MSP-Greg/rails,BlakeWilliams/rails,lcreid/rails,Edouard-chin/rails,yahonda/rails,Envek/rails,Vasfed/rails,Envek/rails,rails/rails,Stellenticket/rails,kddeisz/rails,esparta/rails,Erol/rails,Envek/rails,kmcphillips/rails,yawboakye/rails,Stellenticket/rails,Vasfed/rails,esparta/rails,Vasfed/rails,kmcphillips/rails,Vasfed/rails,kddeisz/rails,yawboakye/rails,esparta/rails,Stellenticket/rails,rails/rails,kddeisz/rails