oneplus9rt: Phase out config_roundedCornerMultipleRadius from overlay…

… package

Phasing out config_roundedCornerMultipleRadius config from device
overlay package.

Bug: 224688507

Test: Build ROM and pass presubmit test
Change-Id: I5cb7efdde8b03f89b74d775612b20e78c6e4d89d

overlay/OnePlus9RTSystemUI/res/values/config.xml

@@ -17,9 +17,6 @@
 -->
 <resources>
 
-    <!-- Respect drawable/rounded.xml intrinsic size for multiple radius corner path customization -->
-    <bool name="config_roundedCornerMultipleRadius">true</bool>
-
     <!-- Should we vibrate on an icon animation of the shelf. This should only be active if the
      vibrator is capable of subtle vibrations -->
     <bool name="config_vibrateOnIconAnimation">true</bool>