fix: remove duplicate environment badges from toolbar

SelectValue already renders the badge from the selected item content,
so the explicit badge in the trigger and the standalone toolbar badge
were redundant.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/layout/Toolbar.tsx

@@ -10,7 +10,6 @@ import { useConnections } from "@/hooks/use-connections";
 import { Database, Plus } from "lucide-react";
 import type { ConnectionConfig, Tab } from "@/types";
 import { getEnvironment } from "@/lib/environment";
-import { EnvironmentBadge } from "@/components/connections/EnvironmentBadge";
 
 export function Toolbar() {
   const [listOpen, setListOpen] = useState(false);
@@ -58,13 +57,6 @@ export function Toolbar() {
 
         <ReadOnlyToggle />
 
-        {activeConn?.environment && (
-          <>
-            <Separator orientation="vertical" className="h-5" />
-            <EnvironmentBadge environment={activeConn.environment} size="sm" />
-          </>
-        )}
-
         <Separator orientation="vertical" className="h-5" />
 
         <Button