Small layout improvement

app/src/main/res/layout/fragment_options_encryption.xml

@@ -33,9 +33,7 @@
             android:id="@+id/ibInfo"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:background="?android:attr/selectableItemBackgroundBorderless"
             android:contentDescription="@string/title_info"
-            android:scaleType="fitCenter"
             android:tooltipText="@string/title_info"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvCaptionGeneral"