remove duplicate entries

extra/Configs/Config.arc

@@ -44,20 +44,3 @@ config CONFIG_ARC_PAGE_SIZE_4K
 	bool "4KB"
 
 endchoice
-
-choice
-	prompt "MMU Page Size"
-	default CONFIG_ARC_PAGE_SIZE_8K
-
-config CONFIG_ARC_PAGE_SIZE_8K
-	bool "8KB"
-	help
-	  Choose between 4k, 8k (default) or 16k
-
-config CONFIG_ARC_PAGE_SIZE_16K
-	bool "16KB"
-
-config CONFIG_ARC_PAGE_SIZE_4K
-	bool "4KB"
-
-endchoice