Inconsistent syntax for deleted function

[a5066987]

Checklist

• [x] This problem exists even with the setting "C_Cpp.enhancedColorization": "Disabled"
• [ ] This bug exists for C
• [x] This bug exists for C++
• [ ] This bug exists for Objective-C
• [ ] This bug exists for Objective-C++

The code with a problem is:

class MemTable{
public:
  MemTable(const MemTable&) = delete;
  MemTable& operator=(const MemTable&) = delete;
};

It looks like:

It should look like:

I think these two "delete" should be identical.