diff --git a/clang-tools-extra/clangd/TUScheduler.cpp b/clang-tools-extra/clangd/TUScheduler.cpp
index 126937ff49e90..5fc98eec3a2fd 100644
--- a/clang-tools-extra/clangd/TUScheduler.cpp
+++ b/clang-tools-extra/clangd/TUScheduler.cpp
@@ -635,10 +635,6 @@ class ASTWorker {
                       std::shared_ptr<const PreambleData> Preamble,
                       std::vector<Diag> CIDiags, WantDiagnostics WantDiags);
 
-  /// Obtain a preamble reflecting all updates so far. Threadsafe.
-  /// It may be delivered immediately, or later on the worker thread.
-  void getCurrentPreamble(
-      llvm::unique_function<void(std::shared_ptr<const PreambleData>)>);
   /// Returns compile command from the current file inputs.
   tooling::CompileCommand getCurrentCompileCommand() const;