Remove compiledb hack for C++20 concepts

Reviewed By: mpage

Differential Revision: D50952145

fbshipit-source-id: 3ae8d6acb6183c49ef95fd246c6c9186cd1f0f0f

Jit/util.h

@@ -234,15 +234,6 @@ struct FreeDeleter {
 template <typename T>
 using unique_c_ptr = std::unique_ptr<T, FreeDeleter>;
 
-// TODO(T132146975) The clangd we're using at Meta for LSP gets very upset if we
-// try to use C++20 Concepts and fails to compile most further code. So we
-// shoehorn -D__BUILT_VIA_COMPILE_COMMANDS_JSON into our compile_commands.json
-// to avoid this. Not a great solution but at least gets most things working.
-#ifdef __BUILT_VIA_COMPILE_COMMANDS_JSON
-
-#define REQUIRES_CALLABLE(...)
-
-#else // not defined __BUILT_VIA_COMPILE_COMMANDS_JSON
 #include <concepts>
 
 #define REQUIRES_CALLABLE(...) requires jit::Callable<__VA_ARGS__>
@@ -252,8 +243,6 @@ concept Callable = requires(F f, Args&&... args) {
   { f(std::forward<Args>(args)...) } -> std::convertible_to<Ret>;
 };
 
-#endif
-
 template <class T>
 class ScopeExit {
  public: