[DO NOT MERGE] Revert "Build dark greylist from public + light grey API"

This reverts commit 6f6a126b9c.

Reason for revert: Bad merge into internal

Change-Id: Iffe5be7c10e8438bd46f71dc22e0867c0d316d40

Android.bp

@@ -1041,7 +1041,6 @@ droiddoc {
         "core/java/overview.html",
         ":current-support-api",
     ],
-    dex_api_filename: "public-dex.txt",
     private_dex_api_filename: "private-dex.txt",
     removed_dex_api_filename: "removed-dex.txt",
     args: framework_docs_args +

Android.mk

@@ -594,7 +594,6 @@ LOCAL_BLACKLIST := $(INTERNAL_PLATFORM_HIDDENAPI_BLACKLIST)
 LOCAL_SRC_GREYLIST := frameworks/base/config/hiddenapi-light-greylist.txt
 LOCAL_SRC_VENDOR_LIST := frameworks/base/config/hiddenapi-vendor-list.txt
 LOCAL_SRC_FORCE_BLACKLIST := frameworks/base/config/hiddenapi-force-blacklist.txt
-LOCAL_SRC_PUBLIC_API := $(INTERNAL_PLATFORM_DEX_API_FILE)
 LOCAL_SRC_PRIVATE_API := $(INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE)
 LOCAL_SRC_REMOVED_API := $(INTERNAL_PLATFORM_REMOVED_DEX_API_FILE)
 
@@ -602,7 +601,6 @@ LOCAL_SRC_ALL := \
 	$(LOCAL_SRC_GREYLIST) \
 	$(LOCAL_SRC_VENDOR_LIST) \
 	$(LOCAL_SRC_FORCE_BLACKLIST) \
-	$(LOCAL_SRC_PUBLIC_API) \
 	$(LOCAL_SRC_PRIVATE_API) \
 	$(LOCAL_SRC_REMOVED_API)
 
@@ -675,8 +673,7 @@ $(LOCAL_LIGHT_GREYLIST): $(LOCAL_SRC_ALL)
 #   (4) subtract entries shared with LOCAL_LIGHT_GREYLIST
 $(LOCAL_DARK_GREYLIST): $(LOCAL_SRC_ALL) $(LOCAL_LIGHT_GREYLIST)
 	comm -13 <(sort $(LOCAL_LIGHT_GREYLIST) $(LOCAL_SRC_FORCE_BLACKLIST)) \
-	         <(cat $(LOCAL_SRC_PUBLIC_API) $(LOCAL_LIGHT_GREYLIST) | \
-	               sed 's/\->.*//' | sed 's/\(.*\/\).*/\1/' | sort | uniq | \
+	         <(sed 's/\->.*//' $(LOCAL_LIGHT_GREYLIST) | sed 's/\(.*\/\).*/\1/' | sort | uniq | \
 	               while read PKG_NAME; do \
 	                   grep -E "^$${PKG_NAME}[^/;]*;" $(LOCAL_SRC_PRIVATE_API); \
 	               done | sort | uniq) \