Remove test which is no longer required and improve test_lf_and_ff_prints_no_needless_message
Remove test which is no longer required and improve test_lf_and_ff_prints_no_needless_message

* test_lf_and_ff_obey_verbosity is no longer necessary because
  test_lf_and_ff_prints_no_needless_message already checks if the proper messages
  are displayed when -q is used.

* Improve test_lf_and_ff_prints_no_needless_message so we also check that
  the correct message is displayed when there are failures to run

davidszotten/pytest,The-Compiler/pytest,hackebrot/pytest,nicoddemus/pytest,The-Compiler/pytest,ddboline/pytest,pytest-dev/pytest,tomviner/pytest,txomon/pytest,nicoddemus/pytest,tomviner/pytest,alfredodeza/pytest,RonnyPfannschmidt/pytest,markshao/pytest,Akasurde/pytest,pfctdayelise/pytest