Remove some unused stuff

Author: shaldengeki

gazelle/python/generate.go

@@ -574,15 +574,13 @@ func ensureNoCollision(file *rule.File, targetName, kind string) error {
 func generateProtoLibraries(args language.GenerateArgs, cfg *pythonconfig.Config, pythonProjectRoot string, visibility []string, res *language.GenerateResult) {
 	// First, enumerate all the proto_library in this package.
 	var protoRuleNames []string
-	protoRules := map[string]*rule.Rule{}
 	protoRel := map[string]string{}
 
 	for _, r := range args.OtherGen {
 		if r.Kind() != "proto_library" {
 			continue
 		}
 		protoRuleNames = append(protoRuleNames, r.Name())
-		protoRules[r.Name()] = r
 		protoRel[r.Name()] = args.Rel
 	}
 	sort.Strings(protoRuleNames)

gazelle/python/resolve.go

@@ -137,7 +137,7 @@ func importsProtoLibrary(cfg *pythonconfig.Config, r *rule.Rule) []resolve.Impor
 	protoRuleAttr := r.PrivateAttr(protoKey)
 	protoRelAttr := r.PrivateAttr(protoRelKey)
 	if protoRuleAttr == nil || protoRelAttr == nil {
-		return specs
+		return nil
 	}
 
 	protoRule := protoRuleAttr.(string)