Revert "Add some more properties to the bp2build APEX converter."

This reverts commit 69bf4c0d60.

Reason for revert: Possibly broke CI (https://android-build.googleplex.com/builds/quarterdeck?branch=aosp-master-bazel&target=bp2build-incremental&lkgb=7266256&fkbb=7237028), rolling back just in case...

Change-Id: I14ebac4f47576a73285d1f724ae4499036e8e678

java/app.go

@@ -1104,8 +1104,6 @@ func AndroidTestHelperAppFactory() android.Module {
 
 type AndroidAppCertificate struct {
 	android.ModuleBase
-	android.BazelModuleBase
-
 	properties  AndroidAppCertificateProperties
 	Certificate Certificate
 }
@@ -1121,7 +1119,6 @@ func AndroidAppCertificateFactory() android.Module {
 	module := &AndroidAppCertificate{}
 	module.AddProperties(&module.properties)
 	android.InitAndroidModule(module)
-	android.InitBazelModule(module)
 	return module
 }