Remove extra padding above Wi-Fi picker, Pointer speed, Automatica date & time, Automatic timezone, Automatic 24-hour format, New notifications and App settings

Bug: 73775027
Test: Robotest and manual test
Change-Id: Ifdec1c2a9b8ce34007ee468ada3f8449005d3263
diff --git a/res/xml/wifi_settings.xml b/res/xml/wifi_settings.xml
index e391bcd..52aadcf 100644
--- a/res/xml/wifi_settings.xml
+++ b/res/xml/wifi_settings.xml
@@ -20,11 +20,17 @@
         android:title="@string/wifi_settings"
         settings:keywords="@string/keywords_wifi">
 
-    <PreferenceCategory android:key="connected_access_point" />
+    <PreferenceCategory
+        android:key="connected_access_point"
+        android:layout="@layout/preference_category_no_label"/>
 
-    <PreferenceCategory android:key="access_points"/>
+    <PreferenceCategory
+        android:key="access_points"
+        android:layout="@layout/preference_category_no_label"/>
 
-    <PreferenceCategory android:key="additional_settings">
+    <PreferenceCategory
+        android:key="additional_settings"
+        android:layout="@layout/preference_category_no_label">
         <Preference
                 android:key="configure_settings"
                 android:title="@string/wifi_configure_settings_preference_title"