Drop setuptools dependency

This (pkg_resources) was dropped from the code in
I6a99d75b4eae4dc9cd3b64fbf1d2fee0c55b04bc

Bug: 388344853
Test: treehugger
Change-Id: Ia9ace2ca9ac2a10bf43fbb99c0b911c6bc17921d
diff --git a/split/Android.bp b/split/Android.bp
index 210e731..3562867 100644
--- a/split/Android.bp
+++ b/split/Android.bp
@@ -5,9 +5,6 @@
 python_defaults {
     name: "treble_split_default",
     pkg_path: "treble/split",
-    libs: [
-        "py-setuptools",
-    ],
 }
 
 python_binary_host {