codacy: Avoid unused imports

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/main/java/com/nextcloud/android/sso/aidl/ParcelFileDescriptorUtil.java

@@ -20,7 +20,6 @@
 package com.nextcloud.android.sso.aidl;
 
 import android.os.ParcelFileDescriptor;
-import android.util.Log;
 
 import com.owncloud.android.lib.common.utils.Log_OC;
 

src/main/java/com/owncloud/android/ui/adapter/UploaderAdapter.java

@@ -1,4 +1,4 @@
-/**
+/*
  *   ownCloud Android client application
  *
  *   @author Tobias Kaminsky
@@ -20,7 +20,6 @@
 
 package com.owncloud.android.ui.adapter;
 
-import android.accounts.Account;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.drawable.Drawable;

src/main/java/com/owncloud/android/ui/fragment/contactsbackup/ContactsBackupFragment.java

@@ -25,7 +25,6 @@ import android.accounts.Account;
 import android.app.DatePickerDialog;
 import android.content.DialogInterface;
 import android.content.Intent;
-import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.view.LayoutInflater;

src/main/java/com/owncloud/android/ui/preview/FileDownloadFragment.java

@@ -1,4 +1,4 @@
-/**
+/*
  *   ownCloud Android client application
  *
  *   @author David A. Velasco
@@ -19,7 +19,6 @@
  */
 package com.owncloud.android.ui.preview;
 
-import android.accounts.Account;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;

src/main/java/com/owncloud/android/utils/MimeTypeUtil.java

@@ -18,7 +18,6 @@
 
 package com.owncloud.android.utils;
 
-import android.accounts.Account;
 import android.content.Context;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;