Hide media box form tab

reader/src/main/res/layout/view_media_box_tab.xml

@@ -38,8 +38,10 @@
         android:src="@drawable/ic_shape"
         app:layout_constraintTop_toBottomOf="@+id/ib_mediaBoxTab_stamp" />
 
+    <!-- Not support form creating now -->
     <ImageButton
         android:id="@+id/ib_mediaBoxTab_form"
+        android:visibility="gone"
         android:layout_width="48dp"
         android:layout_height="48dp"
         android:layout_marginTop="8dp"