Revert "feat(tui): restore footer to session view (#12245)"

This reverts commit 449c5b44b7732f79573c6641fb6950feebfd6a0f.

packages/opencode/src/cli/cmd/tui/routes/session/index.tsx

@@ -1099,9 +1099,6 @@ export function Session() {
                 sessionID={route.sessionID}
               />
             </box>
-            <Show when={!sidebarVisible() || !wide()}>
-              <Footer />
-            </Show>
           </Show>
           <Toast />
         </box>