Remove references to the pdk product variable am: 6a40fabbdf

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2693293

Change-Id: I022ab1e7f4ea0275e0adb1d2e3b3a1586d77ac65
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/Android.bp b/Android.bp
index 2bff72c..48a4bc3 100644
--- a/Android.bp
+++ b/Android.bp
@@ -75,12 +75,6 @@
     ],
     ldflags: ["-Wl,--gc-sections"],
 
-    product_variables: {
-        pdk: {
-            enabled: false,
-        },
-    },
-
     target: {
         android: {
             cflags: [