nds32: Drop unreferenced CONFIG_ADP_AG101P

Seems to be again one of those CONFIG_ symbols named after a board, with
nothing referencing it.

Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com>
diff --git a/include/configs/adp-ag101p.h b/include/configs/adp-ag101p.h
index f2de384..f836593 100644
--- a/include/configs/adp-ag101p.h
+++ b/include/configs/adp-ag101p.h
@@ -14,8 +14,6 @@
 /*
  * CPU and Board Configuration Options
  */
-#define CONFIG_ADP_AG101P
-
 #define CONFIG_USE_INTERRUPT
 
 #define CONFIG_SKIP_LOWLEVEL_INIT
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 88b2143..588a768 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -18,7 +18,6 @@
 CONFIG_ADDR_AUTO_INCR_BIT
 CONFIG_ADDR_MAP
 CONFIG_ADNPESC1
-CONFIG_ADP_AG101P
 CONFIG_AEABI
 CONFIG_AEMIF_CNTRL_BASE
 CONFIG_ALTERA_SPI_IDLE_VAL