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_SDCARD_defconfig b/configs/T1042D4RDB_SDCARD_defconfig
index 5f0e937..c2c03ee 100644
--- a/configs/T1042D4RDB_SDCARD_defconfig
+++ b/configs/T1042D4RDB_SDCARD_defconfig
@@ -13,7 +13,7 @@
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
-CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SPL_FSL_PBL,SDCARD,T104XD4RDB,SYS_FSL_DDR4"
+CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SPL_FSL_PBL,SDCARD,SYS_FSL_DDR4"
 CONFIG_BOOTDELAY=10
 CONFIG_SILENT_CONSOLE=y
 # CONFIG_CONSOLE_MUX is not set