Replace tabs with spaces and remove unnecessary "toString" method

2 jobs for !174 with work/fix_nothing_played in 15 minutes and 15 seconds (queued for 13 minutes and 52 seconds)
detached
Status Job ID Name Coverage
  Build
passed #72298
linux kf5-qt5 qt5.12

00:14:42

86.0%
passed #72297
reuse

00:00:32