xilinx: zynqmp: Clean up xilinx_zynqmp.h

Options are moving to Kconfig by running sed and comments are staying in
that's why do clean up and remove useless comments.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/fa117ac482591d3d5957af54fe99e6acc89972e3.1713167731.git.michal.simek@amd.com
diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h
index f76b3c6..de0db7b 100644
--- a/include/configs/xilinx_zynqmp.h
+++ b/include/configs/xilinx_zynqmp.h
@@ -42,8 +42,6 @@
 # define PARTS_DEFAULT
 #endif
 
-/* Console I/O Buffer Size */
-
 /* Ethernet driver */
 
 #define ENV_MEM_LAYOUT_SETTINGS \
@@ -201,10 +199,6 @@
 # define CFG_SYS_SPI_ARGS_SIZE	0xa0000
 #endif
 
-/* u-boot is like dtb */
-
-/* ATF is my kernel image */
-
 #ifdef CONFIG_SPL_SYS_MALLOC_SIMPLE
 # error "Disable CONFIG_SPL_SYS_MALLOC_SIMPLE. Full malloc needs to be used"
 #endif