Port issue create to using templates API

api/queries_issue.go

@@ -23,13 +23,6 @@ type IssuesAndTotalCount struct {
 	TotalCount int
 }
 
-type IssueTemplate struct {
-	About string
-	Body  string
-	Name  string
-	Title string
-}
-
 type Issue struct {
 	ID        string
 	Number    int
@@ -495,31 +488,6 @@ func IssueDelete(client *Client, repo ghrepo.Interface, issue Issue) error {
 	return err
 }
 
-func IssueTemplates(client *Client, repo *Repository) ([]IssueTemplate, error) {
-	var query struct {
-		Repository struct {
-			IssueTemplates []IssueTemplate
-		} `graphql:"repository(owner: $owner, name: $name)"`
-	}
-
-	variables := map[string]interface{}{
-		"owner": githubv4.String(repo.RepoOwner()),
-		"name":  githubv4.String(repo.RepoName()),
-	}
-
-	gql := graphQLClient(client.http, repo.RepoHost())
-
-	err := gql.QueryNamed(context.Background(), "RepositoryIssueTemplates", &query, variables)
-	if err != nil {
-		return nil, err
-	}
-	if query.Repository.IssueTemplates == nil {
-		return nil, fmt.Errorf("no issue templates found ")
-	}
-
-	return query.Repository.IssueTemplates, nil
-}
-
 // milestoneNodeIdToDatabaseId extracts the REST Database ID from the GraphQL Node ID
 // This conversion is necessary since the GraphQL API requires the use of the milestone's database ID
 // for querying the related issues.