[client] wayland: move wayland early init code out of main.c

client/src/main.c

@@ -1712,12 +1712,6 @@ static int lg_run(void)
   signal(SIGINT , int_handler);
   signal(SIGTERM, int_handler);
 
-  // Request to receive EPIPE instead of SIGPIPE when one end of a pipe
-  // disconnects while a write is pending. This is useful to the Wayland
-  // clipboard backend, where an arbitrary application is on the other end of
-  // that pipe.
-  signal(SIGPIPE, SIG_IGN);
-
   // try map the shared memory
   if (!ivshmemOpen(&g_state.shm))
   {