Disable unused Python 2 variant.

Bug: 245854393
Test: presubmit
Change-Id: I2dce556980261c383e6ac73ff398510749cdd5c8
diff --git a/enum/Android.bp b/enum/Android.bp
index 95daf3f..206080d 100644
--- a/enum/Android.bp
+++ b/enum/Android.bp
@@ -35,10 +35,5 @@
     srcs: [
         "__init__.py",
     ],
-    version: {
-        py2: {
-            enabled: true,
-        },
-    },
     pkg_path: "enum",
 }