configs: tinker: Drop explicit SPL_TEXT

SPL_TEXT_BASE is 0x0 by default, based on the kconfig
definition move in below commit.

"configs: move CONFIG_SPL_TEXT_BASE to Kconfig"
(sha1: f89d6133)

So, don't define it explicitly.
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang<kever.yang@rock-chips.com>

configs/tinker-rk3288_defconfig

@@ -15,7 +15,6 @@ CONFIG_CONSOLE_MUX=y
 CONFIG_DEFAULT_FDT_FILE="rk3288-tinker.dtb"
 # CONFIG_DISPLAY_CPUINFO is not set
 CONFIG_DISPLAY_BOARDINFO_LATE=y
-CONFIG_SPL_TEXT_BASE=0
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_GPT=y
 CONFIG_CMD_I2C=y