Drop flags

Idea behind flags was that scripts can save some notes for future
execution. We are not using this anywhere and probably we wont ever use
it. Also this somewhat goes against idea of stateless configuration.
Overall we clean clean a lot of code if we drop this unused feature.
12 jobs for drop-flags in 14 minutes and 20 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #65085
test

00:03:35

passed #65087
test_busybox

00:14:19

passed #65086
test_valgrind

00:11:36

passed #65088
test_valgrind_busybox

00:11:31

failed #65078
test

00:04:20

failed #65067
test

00:01:58

failed #65069
test_busybox

00:02:11

failed #65080
test_busybox

00:05:07

failed #65079
test_valgrind

00:08:24

failed #65068
test_valgrind

00:05:47

failed #65070
test_valgrind_busybox

00:06:42

failed #65081
test_valgrind_busybox

00:08:19