drop the login footer note

Remove the deployment blurb and the token-storage hint from the sign-in
page. They described implementation details rather than helping anyone
sign in, and the token line exposed the storage mechanism to anyone
looking at the screen. Also removes the now-unused .login-legal rule and
the two locale keys behind it.

packages/client/src/views/LoginView.vue

@@ -170,10 +170,6 @@ function fillDefaultCredentials() {
         <button type="button" class="login-copy" @click="fillDefaultCredentials">
           ⧉ {{ t("login.fillDefaults") }}
         </button>
-        <p class="login-legal">
-          {{ t("login.localDeploymentNote") }}<br />
-          <b>{{ t("login.tokenHint") }}</b>
-        </p>
       </footer>
     </div>
   </div>
@@ -502,18 +498,6 @@ function fillDefaultCredentials() {
   }
 }
 
-.login-legal {
-  margin: 14px 0 0;
-  font-size: 10.5px;
-  line-height: 1.7;
-  color: var(--text-faint);
-
-  b {
-    color: $text-muted;
-    font-weight: 400;
-  }
-}
-
 @media (max-width: $breakpoint-mobile) {
   .login-hd {
     padding: 26px 22px 0;