wlr-ext-workspace: remove protocol impl

Various reasons: 1st, memory issues. 2nd, MR got closed (see https://gitlab.freedesktop.org/wlroots/wlr-protocols/-/merge_requests/35) 3rd, not needed anymore (waybar has its own hyprland/workspaces module)

src/config/ConfigManager.cpp

@@ -1976,11 +1976,6 @@ void CConfigManager::dispatchExecOnce() {
     g_pInputManager->setTouchDeviceConfigs();
     g_pInputManager->setTabletConfigs();
 
-    // set ws names again
-    for (auto& ws : g_pCompositor->m_vWorkspaces) {
-        wlr_ext_workspace_handle_v1_set_name(ws->m_pWlrHandle, ws->m_szName.c_str());
-    }
-
     // check for user's possible errors with their setup and notify them if needed
     g_pCompositor->performUserChecks();
 }