Simplify banner further, let distributions patch us instead.

Revert crazy BANNER macro idea from 5ba7bc1.  It is simply too difficult to
set -DBANNER='"Some distributions specific text"' in a parent Makefile
without entering Shell/Make escape hell ... instead, downstream will
have to patch the banner() function.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

finit.c

@@ -145,11 +145,7 @@ static int run_loop(void)
 static void banner(void)
 {
 	delline();
-#ifdef BANNER
-	echo(BANNER);
-#else
 	echo("Finit version " VERSION " (" WHOAMI ") " __DATE__ " " __TIME__);
-#endif
 }
 
 int main(int argc, char* argv[])