Remove unused constant

6 jobs for !1983 with clean38 in 15 minutes and 57 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Build
passed #19859
macos
build_macos

00:04:40

passed #19860
ubuntu1604
build_ubuntu1604

00:03:34

passed #19861
ubuntu1804
build_ubuntu1804

00:03:44

passed #19862
ubuntu1804-gcc8
build_ubuntu1804-gcc8

00:04:14

passed #19863
vc191x
build_vc191x

00:15:01

passed #19864
vc192x
build_vc192x

00:13:34