minor #218 Tweaked the new app:delete-user command (javiereguiluz)
minor #218 Tweaked the new app:delete-user command (javiereguiluz)

This PR was squashed before being merged into the master branch (closes #218).

Discussion
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Tweaked the new app:delete-user command

Following the merge of #190, I propose these changes because I don't think all the commands should be exactly the same:

  * Removed the explanations that are the same as in `app:add-user` command.
  * Removed the `isVerbose()` support for this command because we already show that in `app:add-user`
  * Removed the utility method that displays the command help.

Commits
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8ef5dea Tweaked the new app:delete-user command

GregSatre/symfony-demo,AntoineToubhans/symfony-demo,bocharsky-bw/symfony-demo,yodur2potassium/test-behat-selenium-symfo,jzawadzki/symfony-demo,xabbuh/symfony-demo,javiereguiluz/symfony-demo,maidmaid/symfony-demo,maidmaid/symfony-demo,voronkovich/symfony-demo,TomasVotruba/symfony-demo,Samox/symfony-demo,yceruto/symfony-demo,dzuelke/symfony-demo,Samox/symfony-demo,healthefrog/symfony-demo,vakstk50/jenkinstest,dzuelke/symfony-demo,samitiana/symfony-demo,javiereguiluz/symfony-demo,Samox/symfony-demo,symfony/symfony-demo,loicgelle/symfony-demo,dkownacki/symfony_demo,TomasVotruba/symfony-demo,taueres/symfony-demo,dkownacki/symfony_demo,maidmaid/symfony-demo,bocharsky-bw/symfony-demo,taueres/symfony-demo,loicgelle/symfony-demo,AntoineToubhans/symfony-demo,xabbuh/symfony-demo,symfony/symfony-demo,cristi-contiu/symfony-demo,ReLexEd/symfony-demo,yodur2potassium/test-behat-selenium-symfo,Samox/symfony-demo,yceruto/symfony-demo,healthefrog/symfony-demo,vakstk50/jenkinstest,voronkovich/symfony-demo,mrook/symfony-behat-codeception-demo,gliderShip/symfony_demo,symfony/symfony-demo,cristi-contiu/symfony-demo,ReLexEd/symfony-demo,samitiana/symfony-demo,Codeception/symfony-demo,mrook/symfony-behat-codeception-demo,taueres/symfony-demo,Codeception/symfony-demo,javiereguiluz/symfony-demo,TomasVotruba/symfony-demo,AntoineToubhans/symfony-demo,yodur2potassium/test-behat-selenium-symfo,rasanga/symfony-demo,healthefrog/symfony-demo,cristi-contiu/symfony-demo,xabbuh/symfony-demo,gliderShip/symfony_demo,nilamkhedkar1/symfony_demo,rasanga/symfony-demo,dkownacki/symfony_demo,jzawadzki/symfony-demo,samitiana/symfony-demo,nilamkhedkar1/symfony_demo,mrook/symfony-behat-codeception-demo,rasanga/symfony-demo,dzuelke/symfony-demo,AntoineToubhans/symfony-demo,jzawadzki/symfony-demo,yceruto/symfony-demo,voronkovich/symfony-demo,loicgelle/symfony-demo,GregSatre/symfony-demo,taueres/symfony-demo,gliderShip/symfony_demo,bocharsky-bw/symfony-demo,vakstk50/jenkinstest,Codeception/symfony-demo,nilamkhedkar1/symfony_demo,ReLexEd/symfony-demo,GregSatre/symfony-demo,GregSatre/symfony-demo