Refactor activestorage/test/models/attached_test.rb
Refactor activestorage/test/models/attached_test.rb

Don't include `ActiveJob::TestHelper` since there is no test that uses it.

Ensure removing of overridden User's methods.
Don't use `send` to execute `remove_method` since it is public.

Related to fd0bd1bf682622f064ac437ceee4e1b2a6b6d3b9

schuetzm/rails,repinel/rails,esparta/rails,shioyama/rails,Envek/rails,georgeclaghorn/rails,kddeisz/rails,Vasfed/rails,gauravtiwari/rails,prathamesh-sonpatki/rails,palkan/rails,utilum/rails,Erol/rails,illacceptanything/illacceptanything,kddeisz/rails,notapatch/rails,aditya-kapoor/rails,BlakeWilliams/rails,shioyama/rails,tgxworld/rails,rafaelfranca/omg-rails,vipulnsward/rails,assain/rails,yawboakye/rails,palkan/rails,iainbeeston/rails,eileencodes/rails,mohitnatoo/rails,assain/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,EmmaB/rails-1,Stellenticket/rails,Edouard-chin/rails,betesh/rails,vipulnsward/rails,jeremy/rails,utilum/rails,deraru/rails,eileencodes/rails,lcreid/rails,rafaelfranca/omg-rails,betesh/rails,bogdanvlviv/rails,arunagw/rails,kmcphillips/rails,bogdanvlviv/rails,schuetzm/rails,illacceptanything/illacceptanything,tjschuck/rails,MSP-Greg/rails,yahonda/rails,Vasfed/rails,kddeisz/rails,mechanicles/rails,illacceptanything/illacceptanything,Stellenticket/rails,illacceptanything/illacceptanything,Edouard-chin/rails,tjschuck/rails,starknx/rails,georgeclaghorn/rails,baerjam/rails,kmcphillips/rails,eileencodes/rails,fabianoleittes/rails,illacceptanything/illacceptanything,baerjam/rails,arunagw/rails,Edouard-chin/rails,tgxworld/rails,BlakeWilliams/rails,prathamesh-sonpatki/rails,MSP-Greg/rails,deraru/rails,illacceptanything/illacceptanything,flanger001/rails,iainbeeston/rails,bogdanvlviv/rails,betesh/rails,schuetzm/rails,mohitnatoo/rails,Stellenticket/rails,starknx/rails,mohitnatoo/rails,yalab/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,joonyou/rails,jeremy/rails,MSP-Greg/rails,illacceptanything/illacceptanything,betesh/rails,jeremy/rails,lcreid/rails,esparta/rails,Edouard-chin/rails,illacceptanything/illacceptanything,esparta/rails,repinel/rails,yalab/rails,joonyou/rails,vipulnsward/rails,utilum/rails,yhirano55/rails,Envek/rails,printercu/rails,lcreid/rails,assain/rails,Erol/rails,flanger001/rails,MSP-Greg/rails,esparta/rails,kmcphillips/rails,mechanicles/rails,yhirano55/rails,aditya-kapoor/rails,gauravtiwari/rails,yahonda/rails,deraru/rails,iainbeeston/rails,georgeclaghorn/rails,notapatch/rails,yawboakye/rails,Vasfed/rails,schuetzm/rails,yawboakye/rails,Erol/rails,Envek/rails,flanger001/rails,kmcphillips/rails,fabianoleittes/rails,yhirano55/rails,rafaelfranca/omg-rails,rails/rails,baerjam/rails,arunagw/rails,yahonda/rails,mechanicles/rails,iainbeeston/rails,illacceptanything/illacceptanything,Envek/rails,rails/rails,palkan/rails,printercu/rails,yahonda/rails,tjschuck/rails,BlakeWilliams/rails,gauravtiwari/rails,deraru/rails,utilum/rails,kddeisz/rails,vipulnsward/rails,baerjam/rails,lcreid/rails,joonyou/rails,notapatch/rails,prathamesh-sonpatki/rails,yalab/rails,tjschuck/rails,starknx/rails,illacceptanything/illacceptanything,mohitnatoo/rails,repinel/rails,rails/rails,yalab/rails,aditya-kapoor/rails,Vasfed/rails,joonyou/rails,palkan/rails,yhirano55/rails,bogdanvlviv/rails,Stellenticket/rails,printercu/rails,shioyama/rails,illacceptanything/illacceptanything,rails/rails,Erol/rails,printercu/rails,tgxworld/rails,arunagw/rails,georgeclaghorn/rails,shioyama/rails,notapatch/rails,BlakeWilliams/rails,mechanicles/rails,flanger001/rails,fabianoleittes/rails,EmmaB/rails-1,eileencodes/rails,assain/rails,aditya-kapoor/rails,yawboakye/rails,prathamesh-sonpatki/rails,EmmaB/rails-1,fabianoleittes/rails,jeremy/rails,repinel/rails,tgxworld/rails