Remove unused failing genrule

android-car-last-released-test-api fails because
api/test-released/*.txt doesn't exist.  It is unused, so remove
it.

Test: m android-car-last-released-test-api
Change-Id: I32b3f1bd4e480c77e5af618ccd6b4186bd8bf490
diff --git a/car-lib/Android.bp b/car-lib/Android.bp
index 1d887fa..4e03d8c 100644
--- a/car-lib/Android.bp
+++ b/car-lib/Android.bp
@@ -109,17 +109,6 @@
     ],
 }
 
-genrule {
-    name: "android-car-last-released-test-api",
-    srcs: [
-        "api/test-released/*.txt",
-    ],
-    cmd: "cp -f $$(echo $(in) | tr \" \" \"\\n\" | sort -n | tail -1) $(genDir)/last-released-test-api.txt",
-    out: [
-        "last-released-test-api.txt",
-    ],
-}
-
 droidstubs {
     name: "android.car-stubs-docs",
     defaults: ["android.car-docs-default"],