Remove unecessary exported symbols from libhwui.so

Test: compiles and links
Bug: 150782769
Change-Id: Ib49c1bf914b6bfaad1fb29371115df7c9eec08d2
diff --git a/libs/hwui/service/GraphicsStatsService.h b/libs/hwui/service/GraphicsStatsService.h
index 59e21d0..4063f74 100644
--- a/libs/hwui/service/GraphicsStatsService.h
+++ b/libs/hwui/service/GraphicsStatsService.h
@@ -44,18 +44,16 @@
         ProtobufStatsd,
     };
 
-    ANDROID_API static void saveBuffer(const std::string& path, const std::string& package,
-                                       int64_t versionCode, int64_t startTime, int64_t endTime,
-                                       const ProfileData* data);
+    static void saveBuffer(const std::string& path, const std::string& package, int64_t versionCode,
+                           int64_t startTime, int64_t endTime, const ProfileData* data);
 
-    ANDROID_API static Dump* createDump(int outFd, DumpType type);
-    ANDROID_API static void addToDump(Dump* dump, const std::string& path,
-                                      const std::string& package, int64_t versionCode,
-                                      int64_t startTime, int64_t endTime, const ProfileData* data);
-    ANDROID_API static void addToDump(Dump* dump, const std::string& path);
-    ANDROID_API static void finishDump(Dump* dump);
-    ANDROID_API static void finishDumpInMemory(Dump* dump, AStatsEventList* data,
-                                               bool lastFullDay);
+    static Dump* createDump(int outFd, DumpType type);
+    static void addToDump(Dump* dump, const std::string& path, const std::string& package,
+                          int64_t versionCode, int64_t startTime, int64_t endTime,
+                          const ProfileData* data);
+    static void addToDump(Dump* dump, const std::string& path);
+    static void finishDump(Dump* dump);
+    static void finishDumpInMemory(Dump* dump, AStatsEventList* data, bool lastFullDay);
 
     // Visible for testing
     static bool parseFromFile(const std::string& path, protos::GraphicsStatsProto* output);