Clean up libziparchive Android.mk

Removed LOCAL_C_INCLUDES which are no longer necessary as zlib
now uses the LOCAL_EXPORT_C_INCLUDE_DIRS mechanism.

Removed a couple of redundant LOCAL_MODULE entries

Tested compiling some of the projects that make use of libziparchive
and libziparchive-host using a clean out dir with aosp_flounder-userdebug
aosp_arm-eng targets

make -j3 libziparchive libandroidfw libartd libart libjavacore libjavacoretests aapt

Change-Id: I2988f1b3a62d1df2b5eada4ad39a9246ac1184fb
diff --git a/libziparchive/Android.mk b/libziparchive/Android.mk
index 9bc6e61..842dab7 100644
--- a/libziparchive/Android.mk
+++ b/libziparchive/Android.mk
@@ -16,7 +16,6 @@
 LOCAL_PATH := $(call my-dir)
 
 source_files := zip_archive.cc
-includes := external/zlib
 
 include $(CLEAR_VARS)
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
@@ -25,16 +24,13 @@
 LOCAL_STATIC_LIBRARIES := libz
 LOCAL_SHARED_LIBRARIES := libutils
 LOCAL_MODULE:= libziparchive
-LOCAL_C_INCLUDES += ${includes}
 LOCAL_CFLAGS := -Werror
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
-LOCAL_MODULE := libziparchive
 LOCAL_CPP_EXTENSION := .cc
 LOCAL_SRC_FILES := ${source_files}
-LOCAL_C_INCLUDES += ${includes}
 LOCAL_STATIC_LIBRARIES := libz libutils
 LOCAL_MODULE:= libziparchive-host
 LOCAL_CFLAGS := -Werror
@@ -46,10 +42,8 @@
 
 include $(CLEAR_VARS)
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
-LOCAL_MODULE := libziparchive
 LOCAL_CPP_EXTENSION := .cc
 LOCAL_SRC_FILES := ${source_files}
-LOCAL_C_INCLUDES += ${includes}
 LOCAL_STATIC_LIBRARIES := libz libutils
 LOCAL_SHARED_LIBRARIES := liblog
 LOCAL_MODULE:= libziparchive-host