ui: main: remove unused include
ui: main: remove unused include

Fixes: 1e32801f376e ("ui_server: config server implementation during build")#
Signed-off-by: Jan Viktorin <3eab6ac54c005c4408f608556a6663b7f2abede7@fit.vutbr.cz>

BeeeOn/server,BeeeOn/server,BeeeOn/server,BeeeOn/server