Fix #3924

Removes "unescape_string(argv[i]);".

Since "do_var_replacement(argv[i])" never adds escape
characters, it is both wrong and unnecessary to remove escape characters
on the next line.

This caused characters that were meant to be escaped to not be anymore.

sway/commands.c

@@ -276,7 +276,6 @@ list_t *execute_command(char *_exec, struct sway_seat *seat,
 			// Var replacement, for all but first argument of set
 			for (int i = handler->handle == cmd_set ? 2 : 1; i < argc; ++i) {
 				argv[i] = do_var_replacement(argv[i]);
-				unescape_string(argv[i]);
 			}
 
 			if (!config->handler_context.using_criteria) {