Stream runs `install` routine twice

[Shady Sharaf]

Once included in verify_database_present:
https://github.com/x-team/wp-stream/blob/1.4.4/stream.php#L216

which is attached to init in:
https://github.com/x-team/wp-stream/blob/1.4.4/stream.php#L75

And the second attached directly to init in:
https://github.com/x-team/wp-stream/blob/1.4.4/stream.php#L116

Not sure if it was justified, so asking for clarification here.
/cc @fjarrett @c3mdigital

[Frankie Jarrett]

@shadyvb Nice observation! It looks like this one can be removed. I'll test thoroughly.