ARM: mvebu: db-88f6820: remove redundant comment

After migration to Kconfig the comment about TEXT_BASE has become
redundant.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>

include/configs/db-88f6820-amc.h

@@ -10,11 +10,6 @@
  * High Level Configuration Options (easy to change)
  */
 
-/*
- * TEXT_BASE needs to be below 16MiB, since this area is scrubbed
- * for DDR ECC byte filling in the SPL before loading the main
- * U-Boot into it.
- */
 #define CONFIG_SYS_TCLK		200000000	/* 200MHz */
 
 /*

include/configs/db-88f6820-gp.h

@@ -10,11 +10,6 @@
  * High Level Configuration Options (easy to change)
  */
 
-/*
- * TEXT_BASE needs to be below 16MiB, since this area is scrubbed
- * for DDR ECC byte filling in the SPL before loading the main
- * U-Boot into it.
- */
 #define CONFIG_SYS_TCLK		250000000	/* 250MHz */
 
 /*