Revert "Apex: add NeverAllowRule for updatable"

This reverts commit e17caa63a61a53a7832b59e7a53ac1c3d82801b4.

Reason for revert: rewrite this in ag/11250335 without neverallow

Bug: 152655956
Change-Id: I24436720056ac1b9878e37c2ee45c5806714f3e9
diff --git a/apex/apex.go b/apex/apex.go
index 3f790dc..8e3e562 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -1005,12 +1005,6 @@
 }
 
 func init() {
-	android.AddNeverAllowRules(android.NeverAllow().
-		ModuleType("apex").
-		With("updatable", "true").
-		With("min_sdk_version", "").
-		Because("All updatable apexes should set min_sdk_version."))
-
 	android.RegisterModuleType("apex", BundleFactory)
 	android.RegisterModuleType("apex_test", testApexBundleFactory)
 	android.RegisterModuleType("apex_vndk", vndkApexBundleFactory)