update CODEOWNERS

cmd/vpu_plugin is now gone so the CODEOWNERS entry can be dropped.

Signed-off-by: Mikko Ylinen <mikko.ylinen@intel.com>

Author: mythi

.github/CODEOWNERS

@@ -18,7 +18,6 @@
 /cmd/sgx_plugin/    @hj-johannes-lee @mythi
 /cmd/dsa_plugin/    @hj-johannes-lee @ozhuraki @mythi
 /cmd/iaa_plugin/    @hj-johannes-lee @ozhuraki @mythi
-/cmd/vpu_plugin/    @bart0sh @mythi
 /cmd/dlb_plugin/    @bart0sh @hj-johannes-lee
 /cmd/xpumanager_sidecar/   @tkatila @uniemimu