Build list of @removed API's dex signatures

CL Iba8869ce6e4f401a8e420ad83ab459d25bbbaae0 added Doclava support
to generate a list of @removed API. Add a rule which builds that
list.

Bug: 78182899
Test: make out/target/common/obj/PACKAGING/removed-dex.txt
Merged-In: Ifa912f8751025b7de24a982a1a227a9c27d18267
Merged-In: I80860c2b9f7213db65d0a9ca65bd645187aa0ce0
Change-Id: I688c14e0d2fbfafe9ac212e6abdc3593cb744ef9
diff --git a/Android.mk b/Android.mk
index 88394d6..6a827b0 100644
--- a/Android.mk
+++ b/Android.mk
@@ -448,6 +448,7 @@
 		-showAnnotation android.annotation.SystemApi \
 		-showAnnotation android.annotation.TestApi \
 		-privateDexApi $(INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE) \
+		-removedDexApi $(INTERNAL_PLATFORM_REMOVED_DEX_API_FILE) \
 		-nodocs
 
 LOCAL_DROIDDOC_CUSTOM_TEMPLATE_DIR:=external/doclava/res/assets/templates-sdk
@@ -456,7 +457,8 @@
 
 include $(BUILD_DROIDDOC)
 
-$(full_target): .KATI_IMPLICIT_OUTPUTS := $(INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE)
+$(full_target): .KATI_IMPLICIT_OUTPUTS := $(INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE) \
+                                          $(INTERNAL_PLATFORM_REMOVED_DEX_API_FILE)
 
 # ====  check javadoc comments but don't generate docs ========
 include $(CLEAR_VARS)