Remove neuralnetworks_float16.

Bug: 254708969
Test: build
Change-Id: I197684a48b727702c5a25e3559dc7c925d873652
diff --git a/jni/Android.bp b/jni/Android.bp
index 1dc575c..d24a989 100644
--- a/jni/Android.bp
+++ b/jni/Android.bp
@@ -65,7 +65,6 @@
 
 cc_library {
     name: "librandom_graph_test_jni",
-    defaults: ["neuralnetworks_float16"],
     srcs: [
         "random_graph_test_jni.cpp",
     ],
@@ -124,4 +123,4 @@
     strip: {
         keep_symbols: true,
     },
-}
\ No newline at end of file
+}