Revert^4 "Build userdebug_plat_sepolicy.cil with Android.bp"

This reverts commit a46d61cd3fae9f11c4a7fb1980d807afc0da8f62.

Reason for revert: fixed debug_ramdisk partition problem

Change-Id: If2350f115f5ff74ee50dac4e5a87c4d171067282
diff --git a/build/soong/selinux_contexts.go b/build/soong/selinux_contexts.go
index d7a0798..a9aed60 100644
--- a/build/soong/selinux_contexts.go
+++ b/build/soong/selinux_contexts.go
@@ -257,6 +257,10 @@
 	return false
 }
 
+func (m *selinuxContextsModule) DebugRamdiskVariantNeeded(ctx android.BaseModuleContext) bool {
+	return false
+}
+
 func (m *selinuxContextsModule) RecoveryVariantNeeded(ctx android.BaseModuleContext) bool {
 	return m.InstallInRecovery() || proptools.Bool(m.properties.Recovery_available)
 }