arch/riscv/setup: Drop dummy_con initialization

con_init in tty/vt.c will now set conswitchp to dummy_con if it's unset.
Drop it from arch setup code.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20191218214506.49252-19-nivedita@alum.mit.eduSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/riscv/kernel/setup.c

@@ -78,9 +78,5 @@ void __init setup_arch(char **cmdline_p)
 	setup_smp();
 #endif
 
-#ifdef CONFIG_DUMMY_CONSOLE
-	conswitchp = &dummy_con;
-#endif
-
 	riscv_fill_hwcap();
 }