Do not enable admin approval on group links by default.

app/src/main/java/org/thoughtcrime/securesms/recipients/ui/sharablegrouplink/ShareableGroupLinkRepository.java

@@ -99,7 +99,6 @@ final class ShareableGroupLinkRepository {
 
     if (toggleEnabled) {
       enabled = !enabled;
-      if (enabled) approvalNeeded = true;
     }
 
     if (approvalNeeded && enabled) {