Cleanup.

src/main/java/de/dennisguse/opentracks/io/file/importer/ParsingException.java

@@ -4,10 +4,6 @@ import androidx.annotation.NonNull;
 
 public class ParsingException extends RuntimeException {
 
-    protected ParsingException(@NonNull String message) {
-        super(message);
-    }
-
     protected ParsingException(@NonNull String message, Exception cause) {
         super(message, cause);
     }
@@ -15,6 +11,6 @@ public class ParsingException extends RuntimeException {
     @NonNull
     @Override
     public String toString() {
-        return "" + getMessage();
+        return getMessage();
     }
 }