Remove non-existent $serverctrls parameter for \ldap_bind()
Remove non-existent $serverctrls parameter for \ldap_bind()

In a8e58b0ba0242819ce201870ac56e05f7604e6ef a `$serverctrls` parameter
was incorrectly added to the \ldap_bind() function.

See php/doc-en#20.

vimeo/psalm,vimeo/psalm