Disable folder nav for Play store version

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

@@ -875,10 +875,12 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             ibFlagged.setOnClickListener(this);
             if (viewType == ViewType.THREAD) {
                 ibFlagged.setOnLongClickListener(this);
+                if (!BuildConfig.PLAY_STORE) {
                     tvFolder.setOnClickListener(this);
                     if (selectableItemBackground != 0)
                         tvFolder.setBackgroundResource(selectableItemBackground);
                 }
+            }
             ibHelp.setOnClickListener(this);
 
             if (vsBody != null) {
@@ -972,6 +974,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             ibFlagged.setOnClickListener(null);
             if (viewType == ViewType.THREAD) {
                 ibFlagged.setOnLongClickListener(null);
+                if (!BuildConfig.PLAY_STORE)
                     tvFolder.setOnClickListener(null);
             }
             ibHelp.setOnClickListener(null);