beaglebone: Stop reinitializing the console in bootblock.c.

The console has already been initialized in the generic bootblock code, and
reinitializing it causes the same banner line to be printed twice and lots of
artifacts in the actual output. This same change had been made to the other
ARM boards but not for beaglebone.

Change-Id: I72e3be1326b1a52b7ec438a44e4fd5f87e4ec717
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/3924
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/ti/beaglebone/bootblock.c

@@ -66,6 +66,4 @@ void bootblock_mainboard_init(void)
 
 	/* Start monotonic timer */
 	//rtc_start();
-
-	console_init();
 }