Remove git.Command.Run and git.Command.RunInDir* (#19280)

Follows #19266, #8553, Close #18553, now there are only three `Run..(&RunOpts{})` functions.
 * before: `stdout, err := RunInDir(path)`
 * now: `stdout, _, err := RunStdString(&git.RunOpts{Dir:path})`

modules/git/repo_branch_nogogit.go

@@ -112,11 +112,10 @@ func walkShowRef(ctx context.Context, repoPath, arg string, skip, limit int, wal
 		if arg != "" {
 			args = append(args, arg)
 		}
-		err := NewCommand(ctx, args...).RunWithContext(&RunContext{
-			Timeout: -1,
-			Dir:     repoPath,
-			Stdout:  stdoutWriter,
-			Stderr:  stderrBuilder,
+		err := NewCommand(ctx, args...).Run(&RunOpts{
+			Dir:    repoPath,
+			Stdout: stdoutWriter,
+			Stderr: stderrBuilder,
 		})
 		if err != nil {
 			if stderrBuilder.Len() == 0 {