Remove some unused imports

## Summary

Very basic maintenance MR to remove unused imports from code files.

src/org/kde/kdeconnect/Backends/BluetoothBackend/BluetoothLinkProvider.java

@@ -19,7 +19,6 @@ import android.os.Build;
 import android.os.Parcelable;
 import android.util.Log;
 
-import org.apache.commons.io.IOUtils;
 import org.kde.kdeconnect.Backends.BaseLinkProvider;
 import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect.Helpers.ThreadHelper;

src/org/kde/kdeconnect/Helpers/ContactsHelper.java

@@ -28,8 +28,6 @@ import org.apache.commons.lang3.StringUtils;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.Reader;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;

src/org/kde/kdeconnect/Helpers/IntentHelper.java

@@ -6,7 +6,6 @@
 
 package org.kde.kdeconnect.Helpers;
 
-import android.app.Activity;
 import android.app.Notification;
 import android.app.PendingIntent;
 import android.content.Context;

src/org/kde/kdeconnect/Helpers/LongSummaryPreferenceCategory.java

@@ -8,7 +8,6 @@ package org.kde.kdeconnect.Helpers;
 
 import android.content.Context;
 import android.util.AttributeSet;
-import android.view.View;
 import android.widget.TextView;
 
 import androidx.preference.PreferenceCategory;

src/org/kde/kdeconnect/Plugins/ClibpoardPlugin/ClipboardFloatingActivity.java

@@ -7,8 +7,6 @@
 
 package org.kde.kdeconnect.Plugins.ClibpoardPlugin;
 
-import android.content.ClipData;
-import android.content.ClipboardManager;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;

src/org/kde/kdeconnect/Plugins/FindMyPhonePlugin/FindMyPhoneActivity.java

@@ -11,7 +11,6 @@ import android.view.Window;
 import android.view.WindowManager;
 
 import androidx.appcompat.app.AppCompatActivity;
-import androidx.appcompat.widget.Toolbar;
 
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.UserInterface.ThemeUtil;

src/org/kde/kdeconnect/Plugins/MousePadPlugin/ComposeSendActivity.java

@@ -17,7 +17,6 @@ import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
-import android.view.View;
 
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.NetworkPacket;

src/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadPlugin.java

@@ -10,7 +10,6 @@ import android.app.Activity;
 import android.content.Intent;
 import android.graphics.drawable.Drawable;
 
-import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect.NetworkPacket;
 import org.kde.kdeconnect.Plugins.Plugin;
 import org.kde.kdeconnect.Plugins.PluginFactory;

src/org/kde/kdeconnect/Plugins/MprisPlugin/MprisNowPlayingFragment.java

@@ -12,7 +12,6 @@ import android.os.Handler;
 import android.os.Message;
 import android.preference.PreferenceManager;
 import android.text.TextUtils;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;

src/org/kde/kdeconnect/Plugins/MprisReceiverPlugin/MprisReceiverCallback.java

@@ -11,7 +11,6 @@ import android.media.session.MediaController;
 import android.media.session.PlaybackState;
 import android.os.Build;
 
-import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
 

src/org/kde/kdeconnect/Plugins/SftpPlugin/RootFile.java

@@ -8,7 +8,6 @@ package org.kde.kdeconnect.Plugins.SftpPlugin;
 
 import org.apache.sshd.common.file.SshFile;
 
-import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.Calendar;

src/org/kde/kdeconnect/UserInterface/AppCompatPreferenceActivity.java

@@ -12,8 +12,6 @@ import android.view.MenuInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
-import org.kde.kdeconnect.BackgroundService;
-
 import androidx.annotation.LayoutRes;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;

src/org/kde/kdeconnect/UserInterface/List/PluginItem.java

@@ -8,14 +8,10 @@ package org.kde.kdeconnect.UserInterface.List;
 
 import android.view.LayoutInflater;
 import android.view.View;
-import android.widget.ImageView;
-import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 
 import org.kde.kdeconnect.Plugins.Plugin;
-import org.kde.kdeconnect_tp.R;
-import org.kde.kdeconnect_tp.databinding.ListItemWithIconEntryBinding;
 
 public class PluginItem extends EntryItemWithIcon {
     private final View.OnClickListener clickListener;

src/org/kde/kdeconnect/UserInterface/PairingFragment.java

@@ -32,7 +32,6 @@ import androidx.fragment.app.Fragment;
 
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.Device;
-import org.kde.kdeconnect.Helpers.ThreadHelper;
 import org.kde.kdeconnect.Helpers.TrustedNetworkHelper;
 import org.kde.kdeconnect.UserInterface.List.ListAdapter;
 import org.kde.kdeconnect.UserInterface.List.PairingDeviceItem;

src/org/kde/kdeconnect/UserInterface/SettingsFragment.java

@@ -4,7 +4,6 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.res.Configuration;
 import android.graphics.Color;
-import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.text.TextUtils;
@@ -15,25 +14,20 @@ import android.view.ViewGroup;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.preference.EditTextPreference;
+import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceFragmentCompat;
 import androidx.preference.PreferenceScreen;
 import androidx.preference.SwitchPreferenceCompat;
 import androidx.preference.TwoStatePreference;
-import androidx.preference.ListPreference;
 
 import com.google.android.material.snackbar.Snackbar;
 
-import org.apache.commons.io.IOUtils;
 import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.Helpers.DeviceHelper;
 import org.kde.kdeconnect.Helpers.NotificationHelper;
 import org.kde.kdeconnect_tp.R;
 
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.charset.Charset;
-
 public class SettingsFragment extends PreferenceFragmentCompat {
 
     private EditTextPreference renameDevice;

src/org/kde/kdeconnect/UserInterface/ThemeUtil.java

@@ -1,7 +1,6 @@
 package org.kde.kdeconnect.UserInterface;
 
 import android.app.Activity;
-import android.content.Context;
 import android.os.Build;
 
 import androidx.annotation.NonNull;