xilinx: versal: Remove unused comments from xilinx_versal.h

Couple of options have been moved to Kconfig but comments stayed in header
that's why remove them.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/ffaee826dcb6853825ac72db91bb3a682c42297d.1663575411.git.michal.simek@amd.com
diff --git a/include/configs/xilinx_versal.h b/include/configs/xilinx_versal.h
index 971bd69..8caf539 100644
--- a/include/configs/xilinx_versal.h
+++ b/include/configs/xilinx_versal.h
@@ -23,10 +23,6 @@
 	EFI_GUID(0x20c5fba5, 0x0171, 0x457f, 0xb9, 0xcd, \
 		 0xf5, 0x12, 0x9c, 0xd0, 0x72, 0x28)
 
-/* Miscellaneous configurable options */
-
-/* Console I/O Buffer Size */
-
 #if defined(CONFIG_CMD_DFU)
 #define DFU_DEFAULT_POLL_TIMEOUT	300
 #define CONFIG_THOR_RESET_OFF