Revert "add --select compatibility flag (#3589)"

This reverts commit e21b284.

It makes no sense to add a flag which does nothing just so scripts
can call it.

If Caja, Thunar, Dolphin and Nautilus committed to some standard,
interface or common specification, we'd commit as well but in the
meantime we're not going to have empty features or flags in here just
because they do.

This is adding unnecessary complexity into Nemo just to save the trouble
of some if() statement in some external script. It's not justified.

Author: clefebvre

src/nemo-main-application.c

@@ -656,7 +656,6 @@ nemo_main_application_local_command_line (GApplication *application,
 	gboolean kill_shell = FALSE;
 	gboolean no_default_window = FALSE;
     gboolean no_desktop_ignored = FALSE;
-    gboolean select_ignored = FALSE;
 	gboolean fix_cache = FALSE;
     gboolean debug = FALSE;
 	gchar **remaining = NULL;
@@ -679,8 +678,6 @@ nemo_main_application_local_command_line (GApplication *application,
 		{ "no-default-window", 'n', 0, G_OPTION_ARG_NONE, &no_default_window,
 		  N_("Only create windows for explicitly specified URIs."), NULL },
         { "no-desktop", '\0', 0, G_OPTION_ARG_NONE, &no_desktop_ignored,
-          N_("Ignored argument - left for compatibility only."), NULL },
-        { "select", 's', 0, G_OPTION_ARG_NONE, &select_ignored,
           N_("Ignored argument - left for compatibility only."), NULL },
 		{ "tabs", 't', 0, G_OPTION_ARG_NONE, &open_in_tabs,
 		  N_("Open URIs in tabs."), NULL },