Remove research megaphone feature flag.

app/src/main/java/org/thoughtcrime/securesms/util/FeatureFlags.java

@@ -59,7 +59,6 @@ public final class FeatureFlags {
   private static final String VERIFY_V2                         = "android.verifyV2";
   private static final String PHONE_NUMBER_PRIVACY_VERSION      = "android.phoneNumberPrivacyVersion";
   private static final String CLIENT_EXPIRATION                 = "android.clientExpiration";
-  public  static final String RESEARCH_MEGAPHONE_1              = "research.megaphone.1";
   public  static final String DONATE_MEGAPHONE                  = "android.donate";
   private static final String VIEWED_RECEIPTS                   = "android.viewed.receipts";
   private static final String GROUP_CALLING                     = "android.groupsv2.calling.2";
@@ -89,7 +88,6 @@ public final class FeatureFlags {
       USERNAMES,
       VERIFY_V2,
       CLIENT_EXPIRATION,
-      RESEARCH_MEGAPHONE_1,
       DONATE_MEGAPHONE,
       VIEWED_RECEIPTS,
       GV1_FORCED_MIGRATE,
@@ -247,11 +245,6 @@ public final class FeatureFlags {
     return getString(CLIENT_EXPIRATION, null);
   }
 
-  /** The raw research megaphone CSV string */
-  public static String researchMegaphone() {
-    return getString(RESEARCH_MEGAPHONE_1, "");
-  }
-
   /** The raw donate megaphone CSV string */
   public static String donateMegaphone() {
     return getString(DONATE_MEGAPHONE, "");

app/src/main/java/org/thoughtcrime/securesms/util/PopulationFeatureFlags.java

@@ -29,7 +29,7 @@ public final class PopulationFeatureFlags {
    * In research megaphone group for given country code
    */
   public static boolean isInResearchMegaphone() {
-    return isEnabled(FeatureFlags.RESEARCH_MEGAPHONE_1, FeatureFlags.researchMegaphone());
+    return false;
   }
 
   /**