Update the existing empty state messages to no longer mention tokens

There is no longer a way that these messages could show and tokens be the problem

ui/app/templates/jobs/index.hbs

@@ -47,7 +47,7 @@
           {{#if (eq filteredJobs.length 0)}}
             <h3 class="empty-message-headline">No Jobs</h3>
             <p class="empty-message-body">
-              There are currently no visible jobs in the cluster. It could be that the cluster is empty. It could also mean {{#link-to "settings.tokens"}}you don't have access to see any jobs{{/link-to}}.
+              The cluster is currently empty.
             </p>
           {{else if searchTerm}}
             <h3 class="empty-message-headline">No Matches</h3>

ui/app/templates/nodes/index.hbs

@@ -48,7 +48,7 @@
           {{#if (eq nodes.length 0)}}
             <h3 class="empty-message-headline">No Clients</h3>
             <p class="empty-message-body">
-              There are currently no visible nodes in the cluster. This could mean that the cluster is bootstrapped with no clients. It could also mean {{#link-to "settings.tokens"}}you don't have access to see any clients{{/link-to}}.
+              The cluster currently has no client nodes.
             </p>
           {{else if searchTerm}}
             <h3 class="empty-message-headline">No Matches</h3>

ui/app/templates/servers.hbs

@@ -38,17 +38,6 @@
               <ul class="pagination-list"></ul>
             </nav>
           </div>
-        {{else}}
-          <div class="empty-message">
-            <h3 class="empty-message-headline">Invalid Permissions</h3>
-            <p class="empty-message-body">
-              {{#if token.secret}}
-                Your ACL token does not grant access to see servers.
-              {{else}}
-                You have no ACL token set. {{#link-to "settings.tokens"}}Provide a token{{/link-to}} with the appropriate permissions to see servers.
-              {{/if}}
-            </p>
-          </div>
         {{/list-pagination}}
         {{outlet}}
       {{/if}}

ui/tests/acceptance/nodes-list-test.js

@@ -193,27 +193,6 @@ test('each server should link to the server detail page', function(assert) {
   });
 });
 
-test('when the API returns no agents, show an empty message', function(assert) {
-  minimumSetup();
-
-  // Override the members handler to act as if server-side permissions
-  // are preventing a qualified response.
-  server.pretender.get('/v1/agent/members', () => [
-    200,
-    {},
-    JSON.stringify({
-      Members: [],
-    }),
-  ]);
-
-  visit('/servers');
-
-  andThen(() => {
-    assert.ok(find('.empty-message'));
-    assert.equal(find('.empty-message-headline').textContent, 'Invalid Permissions');
-  });
-});
-
 test('when accessing servers is forbidden, show a message with a link to the tokens page', function(
   assert
 ) {