Remove stale bot to allow address issues in a timely manner

[MrwanBaghdad]

Expected Behavior

Issues opened by the community are addressed and are not automatically closed by the stale bot

Current Behavior

Due to amount of issues being opened, there's a number of bug tickets that are being not addressed because they're closed by the stale bot

A list of the bugs that have been closed by the stale bot can be found here

Possible Solution

The stale bot is disabled, and bugs are manually inspected and addressed.

[MrwanBaghdad]

CC @Golodhros

[feng-tao]

sounds good