Cleanup

app/src/main/java/eu/faircode/email/ConnectionHelper.java

@@ -57,7 +57,6 @@ import java.net.SocketException;
 import java.net.URI;
 import java.net.URL;
 import java.net.URLDecoder;
-import java.net.UnknownHostException;
 import java.nio.charset.StandardCharsets;
 import java.security.cert.Certificate;
 import java.security.cert.CertificateParsingException;

app/src/main/java/eu/faircode/email/FragmentAccount.java

@@ -74,7 +74,6 @@ import com.google.android.material.textfield.TextInputLayout;
 import org.json.JSONObject;
 
 import java.io.FileNotFoundException;
-import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.security.cert.X509Certificate;
 import java.util.ArrayList;

app/src/main/java/eu/faircode/email/FragmentDialogUnsubscribe.java

@@ -25,7 +25,6 @@ import android.net.ConnectivityManager;
 import android.net.Network;
 import android.os.Build;
 import android.os.Bundle;
-import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.Button;

app/src/main/java/eu/faircode/email/FragmentIdentity.java

@@ -70,7 +70,6 @@ import com.google.android.material.snackbar.Snackbar;
 import com.google.android.material.textfield.TextInputLayout;
 
 import java.io.FileNotFoundException;
-import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.security.cert.X509Certificate;
 import java.util.ArrayList;

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -197,7 +197,6 @@ import java.io.OutputStream;
 import java.io.Serializable;
 import java.io.UnsupportedEncodingException;
 import java.math.BigInteger;
-import java.net.InetAddress;
 import java.security.KeyStore;
 import java.security.Principal;
 import java.security.PrivateKey;

app/src/main/java/eu/faircode/email/FragmentOptionsBehavior.java

@@ -28,7 +28,6 @@ import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.text.Editable;
-import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.view.LayoutInflater;
 import android.view.Menu;

app/src/main/java/eu/faircode/email/FragmentPop.java

@@ -65,7 +65,6 @@ import com.google.android.material.textfield.TextInputLayout;
 
 import org.json.JSONObject;
 
-import java.net.InetAddress;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;

app/src/main/java/eu/faircode/email/StyleHelper.java

@@ -26,7 +26,6 @@ import android.content.SharedPreferences;
 import android.graphics.Color;
 import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
-import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.text.Editable;