Drop platform_apis from android_library

This property is a no-op for this module type.

Test: m nothing
Bug: 215379393
Change-Id: Ia29f2db9330c40bf4b18bdb69544cb92d04d340a
diff --git a/car-qc-lib/Android.bp b/car-qc-lib/Android.bp
index f0ccd8b..48b29d3 100644
--- a/car-qc-lib/Android.bp
+++ b/car-qc-lib/Android.bp
@@ -19,7 +19,6 @@
 
 android_library {
     name: "car-qc-lib",
-    platform_apis: true,
     srcs: ["src/**/*.java"],
     optimize: {
         enabled: false,