[Spark SQL][How-To] Remove builtin function support from Spark

-sql called FunctionRegistry that seems to act as an allowlist on what functions Spark can execute. If I remove a function of the registry, is that enough guarantee that that function can "never" be invoked in Spark, or are there other areas that would need to be changed as well? Thank

[Spark SQL][How-To] Remove builtin function support from Spark

-sql called FunctionRegistry that seems to act as an allowlist on what functions Spark can execute. If I remove a function of the registry, is that enough guarantee that that function can "never" be invoked in Spark, or are there other areas that would need to be changed as well? Thank