[llvm] [NFC][TableGen] Add deleted copy operations for RAII guard classes (PR #184168)

[Rahul Joshi via llvm-commits]

jurahul wrote:

@JaydeepChauhan14 Quick Q: Are you planning to do this for more RAII like classes? If so, does having a common base class for all RAII classes with a deleted copy constructor and assignment operator help not duplicate this across these classes, as long as you derive all you RAII like classes from this common base class?

https://github.com/llvm/llvm-project/pull/184168