libc: Cleanup remaining files

The existing files had some style problems that this patch fixes.

Change-Id: I794e0d96e52f8da0ffa0d70a41f36c4432b4e563
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/lib/libc/putchar.c b/lib/libc/putchar.c
index 8265667..0beb625 100644
--- a/lib/libc/putchar.c
+++ b/lib/libc/putchar.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,11 +7,6 @@
 #include <stdio.h>
 #include <console.h>
 
-/* Putchar() should either return the character printed or EOF in case of error.
- * Our current console_putc() function assumes success and returns the
- * character. Write all other printing functions in terms of putchar(), if
- * possible, so they all benefit when this is improved.
- */
 int putchar(int c)
 {
 	int res;