Revert "Set the session name explicitly in SessionHandlerPHP, even when we are using the default value."
Revert "Set the session name explicitly in SessionHandlerPHP, even when we are using the default value."

This reverts commit cd6278cc2bf0704d130aa2fe66e8b6dc1d007375.

ghalse/simplesamlphp,ghalse/simplesamlphp,sitya/simplesamlphp,simplesamlphp/simplesamlphp,simplesamlphp/simplesamlphp,sitya/simplesamlphp,dnmvisser/simplesamlphp,ghalse/simplesamlphp,dnmvisser/simplesamlphp,jschlyter/simplesamlphp,simplesamlphp/simplesamlphp,jschlyter/simplesamlphp,jschlyter/simplesamlphp,jschlyter/simplesamlphp,sitya/simplesamlphp,sitya/simplesamlphp,dnmvisser/simplesamlphp,dnmvisser/simplesamlphp,ghalse/simplesamlphp,jschlyter/simplesamlphp,simplesamlphp/simplesamlphp