Removing a memory region does not delete/hide analysis artifacts (datavars, functions, etc.) in that region

[negasora]

Repro steps:

1. Open a.txt
2. Add a memory region: bv.memory_map.add_memory_region("a", 0xdeadbeef, b'A'*0x8)
3. Rename the variable a in main
4. Notice bv.data_vars now includes 3735928559: <var 0xdeadbeef: void>
5. Remove the memory region: bv.memory_map.remove_memory_region("a")
6. Notice that bv.data_vars still includes 3735928559: <var 0xdeadbeef: void>

[xusheng6]

I think this is also true with functions, or any other analysis artifacts related to the newly added memory region

[plafosse]

I can see the desire for this in the UI but having the remove_memory_region API do that seems a little heavy handed as you should just be able to remove the data vars and functions in that region with the API easily as well.