powerpc: T104xRDB: Remove macro CONFIG_T104xRDB and T104xD4RDB

CONFIG_T104xRDB is defined in T104xRDB.h, so it is always enabled for
all T1040RDB, T1040D4RDB, T1042RDB, T1042D4RDB, T1042RDB_PI.
CONFIG_T104XD4RDB is defined for all T1040D4RDB, T1042D4RDB.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/configs/T1042D4RDB_SECURE_BOOT_defconfig b/configs/T1042D4RDB_SECURE_BOOT_defconfig
index 126695d..ced54e1 100644
--- a/configs/T1042D4RDB_SECURE_BOOT_defconfig
+++ b/configs/T1042D4RDB_SECURE_BOOT_defconfig
@@ -7,7 +7,7 @@
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="T104XD4RDB,SYS_FSL_DDR4,SECURE_BOOT"
+CONFIG_SYS_EXTRA_OPTIONS="SYS_FSL_DDR4,SECURE_BOOT"
 CONFIG_BOOTDELAY=10
 CONFIG_SILENT_CONSOLE=y
 # CONFIG_CONSOLE_MUX is not set