[Toast] Switch to use a device config instead of feature flag for appSearch.

Bug: 241001264
Test: local
Change-Id: I47416b07a62379ab5c2c17b3b769c8bc8b2ef106
diff --git a/src/com/android/launcher3/config/FeatureFlags.java b/src/com/android/launcher3/config/FeatureFlags.java
index ffce570..7f34148 100644
--- a/src/com/android/launcher3/config/FeatureFlags.java
+++ b/src/com/android/launcher3/config/FeatureFlags.java
@@ -274,10 +274,6 @@
             "USE_SEARCH_REQUEST_TIMEOUT_OVERRIDES", false,
             "Use local overrides for search request timeout");
 
-    public static final BooleanFlag USE_APP_SEARCH_FOR_WEB = getDebugFlag(
-            "USE_APP_SEARCH_FOR_WEB", false,
-            "Use app search to request zero state web suggestions");
-
     public static final BooleanFlag CONTINUOUS_VIEW_TREE_CAPTURE = getDebugFlag(
             "CONTINUOUS_VIEW_TREE_CAPTURE", false, "Capture View tree every frame");