bcm53xx: drop Copyright header from two of my bash scripts

Both scripts modified by this patch were added by me. First of all I
incorrectly added OpenWrt as Copyright holder. It was wrong because:
1) I simply can't transfer my moral rights according to the Polish law
2) Transfering copyrights (economic rights) requires an agreement which
   I didn't sign with OpenWrt(.org).
Other than that I don't find these trivial scripts important enough to
put info about *my* copyrights in a header so this patch just drops them
completely.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

target/linux/bcm53xx/base-files/etc/diag.sh

@@ -1,5 +1,4 @@
 #!/bin/sh
-# Copyright (C) 2014 OpenWrt.org
 
 . /lib/functions/leds.sh
 

target/linux/bcm53xx/base-files/etc/uci-defaults/09_fix_crc

@@ -1,7 +1,3 @@
 #!/bin/sh
-#
-# Copyright (C) 2007 OpenWrt.org
-#
-#
 
 mtd fixtrx firmware || mtd fixseama firmware