codacy: Avoid unused imports

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

src/main/java/com/owncloud/android/MainApp.java

@@ -22,7 +22,6 @@
 package com.owncloud.android;
 
 import android.Manifest;
-import android.accounts.Account;
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.app.ActivityManager;
@@ -76,7 +75,6 @@ import com.owncloud.android.jobs.NCJobCreator;
 import com.owncloud.android.lib.common.OwnCloudClientManagerFactory;
 import com.owncloud.android.lib.common.utils.Log_OC;
 import com.owncloud.android.lib.resources.status.OwnCloudVersion;
-import com.owncloud.android.ui.activity.ContactsPreferenceActivity;
 import com.owncloud.android.ui.activity.SyncedFoldersActivity;
 import com.owncloud.android.ui.notifications.NotificationUtils;
 import com.owncloud.android.utils.DisplayUtils;

src/main/java/com/owncloud/android/providers/DiskLruImageCacheFileProvider.java

@@ -21,7 +21,6 @@
 
 package com.owncloud.android.providers;
 
-import android.accounts.Account;
 import android.content.ContentProvider;
 import android.content.ContentValues;
 import android.database.Cursor;

src/main/java/com/owncloud/android/ui/activities/StickyHeaderItemDecoration.java

@@ -21,7 +21,6 @@
 package com.owncloud.android.ui.activities;
 
 import android.graphics.Canvas;
-import android.graphics.Color;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;

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

@@ -27,7 +27,6 @@
 
 package com.owncloud.android.utils;
 
-import android.accounts.Account;
 import android.accounts.AccountManager;
 import android.annotation.SuppressLint;
 import android.app.Activity;
@@ -88,13 +87,10 @@ import java.math.BigDecimal;
 import java.net.IDN;
 import java.nio.charset.Charset;
 import java.text.DateFormat;
-import java.util.Collection;
 import java.util.Date;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.Locale;
 import java.util.Map;
-import java.util.Set;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;

src/main/java/com/owncloud/android/utils/glide/HttpStreamFetcher.java

@@ -22,17 +22,12 @@
  */
 package com.owncloud.android.utils.glide;
 
-import android.accounts.Account;
-
 import com.bumptech.glide.Priority;
 import com.bumptech.glide.load.data.DataFetcher;
 import com.nextcloud.client.account.CurrentAccountProvider;
 import com.nextcloud.client.account.User;
 import com.nextcloud.client.network.ClientFactory;
-import com.owncloud.android.MainApp;
-import com.owncloud.android.lib.common.OwnCloudAccount;
 import com.owncloud.android.lib.common.OwnCloudClient;
-import com.owncloud.android.lib.common.OwnCloudClientManagerFactory;
 import com.owncloud.android.lib.common.operations.RemoteOperation;
 import com.owncloud.android.lib.common.utils.Log_OC;