remind that verification isn't necessary after signup

Might need to be done in other translations, especially the jp one

translations/en-us.all.json

@@ -101,7 +101,7 @@
   },
   {
     "id":"signup_verification_email",
-    "translation": "Finally, please check your mail inbox (and spam folder!) for the verification email."
+    "translation": "Email verification is disabled at the moment, so you may use your account immediately. In the future, please check your mail inbox (and spam folder!) for the verification email."
   },
   {
     "id":"signup_verification_noemail",