board: toradex: imx: Remove not needed env variables

Remove not needed variables from environment and include config files.

 - setup variable used to be executed from some bootscript, however
   it's not required and there is no point on having this small helper
   here
 - boot_file, kernel_file, ip_dyn variables are not used anywhere
 - fdt_fixup variable is just set empty
 - defargs, vidargs variables used to be used from some bootscript,
   however there is no point on having it here and even old legacy
   bootscript can work without them
 - removed CONFIG_ENABLE_DDR_TRAINING_DEBUG, this is a leftover from
   some copy/paste

On colibri imx6ull/imx7 NAND module, remove consoleblank=0, this is
already the Linux kernel default therefore useless.

Various Linux Kernel command line options removed are not-existing
left-over that applied to some old NXP i.MX downstream branch

Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
diff --git a/include/configs/apalis_imx6.h b/include/configs/apalis_imx6.h
index 8a9f3ef..0df3917 100644
--- a/include/configs/apalis_imx6.h
+++ b/include/configs/apalis_imx6.h
@@ -64,12 +64,9 @@
 
 #define CFG_EXTRA_ENV_SETTINGS \
 	BOOTENV \
-	"boot_file=zImage\0" \
 	"boot_script_dhcp=boot.scr\0" \
 	"console=ttymxc0\0" \
-	"defargs=enable_wait_mode=off vmalloc=400M\0" \
 	"fdt_board=eval\0" \
-	"fdt_fixup=;\0" \
 	MEM_LAYOUT_ENV_SETTINGS \
 	UBOOT_UPDATE \
 	"setethupdate=if env exists ethaddr; then; else setenv ethaddr " \
@@ -80,16 +77,12 @@
 		"|| setenv drive 2; mmc rescan; load ${interface} ${drive}:1" \
 		" ${loadaddr} flash_blk.img && " \
 		"source ${loadaddr}\0" \
-	"setup=setenv setupargs fec_mac=${ethaddr} " \
-		"consoleblank=0 no_console_suspend=1 console=tty1 " \
-		"console=${console},${baudrate}n8\0 " \
 	"setupdate=run setsdupdate || run setusbupdate || run setethupdate\0" \
 	"setusbupdate=usb start && setenv interface usb; setenv drive 0; " \
 		"load ${interface} ${drive}:1 ${loadaddr} flash_blk.img && " \
 		"source ${loadaddr}\0" \
 	"splashpos=m,m\0" \
-	"splashimage=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
-	"vidargs=mxc_hdmi.only_cea=1 fbmem=32M\0"
+	"splashimage=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0"
 
 /* Miscellaneous configurable options */