Le Xich Long issues

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                                            Le Xich Long

Add backtick to remove_quotes character list

Fix #628 Consider backtick `` ` ``as a quote character and remove it in utils.removte_quotes()

sqlparse.utils.remove_quotes does not remove backtick

Should back tick `` ` `` considered to be a quote character ? For example `` `test_schema` `` when passed to remove_quotes() should return schema name without the backtick. [https://github.com/andialbrecht/sqlparse/blob/23d29933ddc4272b495d36e0e32d3eaf0c3ef76d/sqlparse/utils.py#L58](https://github.com/andialbrecht/sqlparse/blob/23d29933ddc4272b495d36e0e32d3eaf0c3ef76d/sqlparse/utils.py#L58)...

"listeners" manipulation when bind-address set breaks ability to use SSL

Since [commit ed0ff0732990c2fc4a7f3ef192b15a34ca2f12b3](https://github.com/mesos/kafka/commit/ed0ff0732990c2fc4a7f3ef192b15a34ca2f12b3#diff-f62e82d4caa4d616bbb8e8489b2ac8e0) The listeners config is forced to only PLAINTEXT when bind-address is defined which effectively disable the ability to use more than one listeners.