review of analog clock app

  - remove Time Class since it is not used
  - remove unused variables from Clock class
2 jobs for !284 with analog_clock in 1 minute and 58 seconds (queued for 4 seconds)
latest detached
Status Job ID Name Coverage
  Build
passed #7000
build

00:01:24

 
  Test
passed #7001
lint

00:00:33