Remove unused code

import android.content.Context;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.net.Uri;

    public String name;

    public String contentType;

    public long size;

    public ImageView iconView;

    private AttachmentFileDownloadCallback callback;

        }

    }

    /**

     * Check the {@link PackageManager} if the phone has an application

     * installed to view this type of attachment.

     * If not, {@link #viewButton} is disabled.

     * This should be done in any place where

     * attachment.viewButton.setEnabled(enabled); is called.

     * This method is safe to be called from the UI-thread.

     */

    public void checkViewable() {

        if (viewButton.getVisibility() == View.GONE) {

            // nothing to do

            return;

        }

        if (!viewButton.isEnabled()) {

            // nothing to do

            return;

        }

        try {

            Uri uri = AttachmentProvider.getAttachmentUriForViewing(mAccount, part.getAttachmentId());

            Intent intent = new Intent(Intent.ACTION_VIEW);

            intent.setData(uri);

            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);

            if (intent.resolveActivity(mContext.getPackageManager()) == null) {

                viewButton.setEnabled(false);

            }

            // currently we do not cache re result.

        } catch (Exception e) {

            Log.e(K9.LOG_TAG, "Cannot resolve activity to determine if we shall show the 'view'-button for an attachment", e);

        }

    }

    public void attachmentSaved(final String filename) {

        Toast.makeText(mContext, String.format(

                           mContext.getString(R.string.message_view_status_attachment_saved), filename),

                       mContext.getString(R.string.message_view_status_attachment_not_saved),

                       Toast.LENGTH_LONG).show();

    }

    public AttachmentFileDownloadCallback getCallback() {

        return callback;

    }

    public void setCallback(AttachmentFileDownloadCallback callback) {

        this.callback = callback;

    }