Remove __ret_value__ prior to writing to console

[iamdefinitelyahuman]

What I did

Fix a recursion error within the console when attempting to print the output of globals() or locals().

Fixes #1014

How I did it

The bug was due to how console output is generated - under the hood, globals() is mutated to __ret_value__ = globals() and then __ret_value__ is printed. However, because the return value contains __ret_value__ we end up dying recursion death as we try to format dict-inside-dict-inside-dict.

The fix is simply to remove __ret_value__ from locals prior to generating the console output.

How to verify it

Open the console and type locals() or globals().