Remove ndk_platform backend. Use the ndk backend. am: 43cb9c0dde am: 595ca251c9

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1778295

Change-Id: Idea37ea03969ac10267b856764544f18acb75b69
diff --git a/stable/Android.bp b/stable/Android.bp
index 1573ebd..73a9c37 100644
--- a/stable/Android.bp
+++ b/stable/Android.bp
@@ -68,7 +68,7 @@
     ],
     static_libs: [
         "libgflags",
-        "libupdate_engine_stable-V1-ndk_platform",
+        "libupdate_engine_stable-V1-ndk",
     ],
     srcs: [
         "update_engine_stable_client.cc",