Remove background scanning

BCM4329 pno is broken. Turn it off until it is fixed.

Bug: 6513195
Change-Id: If81244a3cf8317e1d2a0d69e113d62e86055f62c
diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index a42b3a2..bd7e886 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -94,9 +94,6 @@
     <!-- Boolean indicating whether the wifi chipset has dual frequency band support -->
     <bool translatable="false" name="config_wifi_dual_band_support">true</bool>
 
-    <!-- Boolean indicating whether the wifi chipset has background scan support -->
-    <bool translatable="false" name="config_wifi_background_scan_support">true</bool>
-
     <!-- Component name of the service providing network location support. -->
     <string name="config_networkLocationProvider">com.google.android.location.NetworkLocationProvider</string>