Remove superfluous vrr_flipping field and clean up related code

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
12 jobs for vrr-fix in 7 minutes and 39 seconds (queued for 5 minutes and 53 seconds)
Status Job ID Name Coverage
  Docker Image
passed #68137
debian-testing

00:00:33

 
  Build
passed #68140
xserver-1.13

00:00:42

passed #68141
xserver-1.14

00:00:32

passed #68142
xserver-1.15

00:00:33

passed #68143
xserver-1.16

00:00:34

passed #68144
xserver-1.17

00:00:41

passed #68145
xserver-1.18

00:00:48

passed #68146
xserver-1.18-clang

00:00:41

passed #68147
xserver-1.19

00:00:29

passed #68148
xserver-1.19-clang

00:00:38

passed #68138
xserver-1.20

00:00:46

passed #68139
xserver-1.20-clang

00:00:37