Never suppress UnusedDeclaration on TAG fields

Remove the ones that weren't used at all. They can be added back if
they're ever actually used. Moreover, one of them was even named
incorrectly.

app/src/main/java/org/fdroid/fdroid/Utils.java

@@ -71,7 +71,6 @@ import java.util.zip.Adler32;
 
 public final class Utils {
 
-    @SuppressWarnings("UnusedDeclaration")
     private static final String TAG = "Utils";
 
     private static final int BUFFER_SIZE = 4096;

app/src/main/java/org/fdroid/fdroid/views/swap/SwapAppsView.java

@@ -227,9 +227,6 @@ public class SwapAppsView extends ListView implements
 
     private class AppListAdapter extends CursorAdapter {
 
-        @SuppressWarnings("UnusedDeclaration")
-        private static final String TAG = "AppListAdapter";
-
         private class ViewHolder {
 
             private final LocalBroadcastManager localBroadcastManager;

app/src/main/java/org/fdroid/fdroid/views/swap/SwapWorkflowActivity.java

@@ -656,9 +656,6 @@ public class SwapWorkflowActivity extends AppCompatActivity {
         public static final int TYPE_COMPLETE = 1;
         public static final int TYPE_ERROR = 2;
 
-        @SuppressWarnings("UnusedDeclaration")
-        private static final String TAG = "UpdateAsyncTask";
-
         @NonNull
         protected final Set<String> selectedApps;