fix theme with AppCompat 22.1 or later

AppCompat 22.1 is stricter in regards to what flags it it accepts

Change-Id: If9b77e59604147cb7050b5721380ab213fcdb9a6
Reviewed-on: https://gerrit.libreoffice.org/15571Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>

android/experimental/LOAndroid3/res/values/themes.xml

@@ -2,9 +2,8 @@
 <resources>
     <style name="LibreOfficeTheme" parent="LibreOfficeTheme.Base"/>
 
-    <style name="LibreOfficeTheme.Base" parent="Theme.AppCompat.Light">
+    <style name="LibreOfficeTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
         <item name="android:windowNoTitle">true</item>
-        <item name="windowActionBar">false</item>
     </style>
 
     <style name="BrowserTheme" parent="Theme.AppCompat.Light.NoActionBar">