codacy: Avoid unused private fields

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

@@ -90,7 +90,6 @@ public class FileContentProvider extends ContentProvider {
     private static final String TEXT = " TEXT, ";
     private static final String ALTER_TABLE = "ALTER TABLE ";
     private static final String ADD_COLUMN = " ADD COLUMN ";
-    private static final String REMOVE_COLUMN = " REMOVE COLUMN ";
     private static final String UPGRADE_VERSION_MSG = "OUT of the ADD in onUpgrade; oldVersion == %d, newVersion == %d";
     private static final int SINGLE_PATH_SEGMENT = 1;
     public static final int ARBITRARY_DATA_TABLE_INTRODUCTION_VERSION = 20;

src/main/java/com/owncloud/android/ui/activity/EditorWebView.java

@@ -66,8 +66,6 @@ public abstract class EditorWebView extends ExternalSiteWebView {
 
     private Unbinder unbinder;
 
-    private static final String TAG = EditorWebView.class.getSimpleName();
-
     protected void loadUrl(String url) {
         onUrlLoaded(url);
     }

src/main/java/com/owncloud/android/ui/trashbin/RemoteTrashbinRepository.java

@@ -43,8 +43,6 @@ import androidx.annotation.NonNull;
 
 public class RemoteTrashbinRepository implements TrashbinRepository {
 
-    private static final String TAG = RemoteTrashbinRepository.class.getSimpleName();
-
     private final User user;
     private final ClientFactory clientFactory;