cmd/vulnreport: delete unused command vulnreport duplicates

Change-Id: I78ccf562b43bfe372a21452afb0312efd6948ca9
Reviewed-on: https://go-review.googlesource.com/c/vulndb/+/590036
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>

cmd/vulnreport/duplicates.go

@@ -1,105 +0,0 @@
-// Copyright 2024 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package main
-
-import (
-	"context"
-	"fmt"
-	"strings"
-	"sync"
-
-	"golang.org/x/vulndb/cmd/vulnreport/log"
-)
-
-type duplicates struct {
-	// protects aliasesToIssues
-	mu              sync.Mutex
-	aliasesToIssues map[string][]int
-
-	*aliasFinder
-	*xrefer
-	*issueParser
-}
-
-func (*duplicates) name() string { return "duplicates" }
-
-func (*duplicates) usage() (string, string) {
-	const desc = "finds likely duplicates of the given Github issue (with no args, looks at all open issues)"
-	return "<no args> | " + ghIssueArgs, desc
-}
-
-func (*duplicates) close() error {
-	return nil
-}
-
-func (d *duplicates) setup(ctx context.Context) error {
-	d.aliasesToIssues = make(map[string][]int)
-
-	d.issueParser = new(issueParser)
-	d.xrefer = new(xrefer)
-	return setupAll(ctx, d.xrefer, d.issueParser)
-}
-
-func (d *duplicates) run(ctx context.Context, issNum string) (err error) {
-	iss, err := d.lookup(ctx, issNum)
-	if err != nil {
-		return err
-	}
-
-	if d.skip(iss, d.skipReason) {
-		return nil
-	}
-
-	aliases := aliases(iss)
-
-	if len(aliases) == 0 {
-		log.Infof("skipping issue #%d (no aliases found)", iss.Number)
-		return nil
-	}
-
-	aliases = d.allAliases(ctx, aliases)
-	var allXrefs []string
-	for _, a := range aliases {
-		var xrefs []string
-
-		// Find existing reports with this alias.
-		if reports := d.rc.ReportsByAlias(a); len(reports) != 0 {
-			for _, r := range reports {
-				fname, err := r.YAMLFilename()
-				if err != nil {
-					fname = r.ID
-				}
-				xrefs = append(xrefs, fname)
-			}
-		}
-
-		// Find other open issues with this alias.
-		if issNums, ok := d.aliasesToIssues[a]; ok {
-			for _, in := range issNums {
-				xrefs = append(xrefs, d.ic.Reference(in))
-			}
-		}
-
-		d.addAlias(a, iss.Number)
-
-		if len(xrefs) != 0 {
-			allXrefs = append(allXrefs, fmt.Sprintf("#%d shares alias %s with %s", iss.Number, a, strings.Join(xrefs, ", ")))
-		}
-	}
-
-	if len(allXrefs) != 0 {
-		log.Outf("%s is a likely duplicate:\n - %s", d.ic.Reference(iss.Number), strings.Join(allXrefs, "\n - "))
-	} else {
-		log.Infof("found no existing reports or open issues with aliases in issue #%d", iss.Number)
-	}
-	return nil
-}
-
-func (d *duplicates) addAlias(a string, n int) {
-	d.mu.Lock()
-	defer d.mu.Unlock()
-
-	d.aliasesToIssues[a] = append(d.aliasesToIssues[a], n)
-}