diff --git a/ast.go b/ast.go
index 7ec810c..5f8bdcb 100644
--- a/ast.go
+++ b/ast.go
@@ -41,11 +41,6 @@ func (g *graph) Lookup(name string) (Entity, bool) {
 	return e, ok
 }
 
-// ProcessDescriptors is deprecated; use ProcessCodeGeneratorRequest instead
-func ProcessDescriptors(debug Debugger, req *plugin_go.CodeGeneratorRequest) AST {
-	return ProcessCodeGeneratorRequest(debug, req)
-}
-
 // ProcessCodeGeneratorRequest converts a CodeGeneratorRequest from protoc into a fully
 // connected AST entity graph. An error is returned if the input is malformed.
 func ProcessCodeGeneratorRequest(debug Debugger, req *plugin_go.CodeGeneratorRequest) AST {
diff --git a/init_option.go b/init_option.go
index 5c92c2f..257ebc3 100644
--- a/init_option.go
+++ b/init_option.go
@@ -49,9 +49,3 @@ func BiDirectional() InitOption {
 }
 
 // SupportedFeatures allows defining protoc features to enable / disable.
-// See: https://github.com/protocolbuffers/protobuf/blob/v3.17.0/docs/implementing_proto3_presence.md#signaling-that-your-code-generator-supports-proto3-optional
-func SupportedFeatures(feat *uint64) InitOption {
-	return func(g *Generator) {
-		g.persister.SetSupportedFeatures(feat)
-	}
-}
diff --git a/lang/go/type_name_p3_presence_test.go b/lang/go/type_name_p3_presence_test.go
index cb0a2bc..6edb997 100644
--- a/lang/go/type_name_p3_presence_test.go
+++ b/lang/go/type_name_p3_presence_test.go
@@ -1,3 +1,4 @@
+//go:build proto3_presence
 // +build proto3_presence
 
 package pgsgo