DELETE /api/v1/interface call fails on on pfSense 2.5.0-RELEASE

[jaredhendrickson13]

Looks like our first compatibility issue with the official release of pfSense 2.5.0.

Fatal error: Uncaught Error: Call to undefined function link_interface_to_gre() in /etc/inc/api/models/APIInterfaceDelete.inc:56
Stack trace:
#0 /etc/inc/api/models/APIInterfaceDelete.inc(31): APIInterfaceDelete->destroy_interface('opt1')
#1 /etc/inc/api/framework/APIModel.inc(97): APIInterfaceDelete->action()
#2 /etc/inc/api/endpoints/APIInterface.inc(36): APIModel->call()
#3 /etc/inc/api/framework/APIEndpoint.inc(63): APIInterface->delete()
#4 /usr/local/www/api/v1/interface/index.php(3): APIEndpoint->listen()
#5 {main}
  thrown in /etc/inc/api/models/APIInterfaceDelete.inc on line 56
PHP ERROR: Type: 1, File: /etc/inc/api/models/APIInterfaceDelete.inc, Line: 56, Message: Uncaught Error: Call to undefined function link_interface_to_gre() in /etc/inc/api/models/APIInterfaceDelete.inc:56
Stack trace:
#0 /etc/inc/api/models/APIInterfaceDelete.inc(31): APIInterfaceDelete->destroy_interface('opt1')
#1 /etc/inc/api/framework/APIModel.inc(97): APIInterfaceDelete->action()
#2 /etc/inc/api/endpoints/APIInterface.inc(36): APIModel->call()
#3 /etc/inc/api/framework/APIEndpoint.inc(63): APIInterface->delete()
#4 /usr/local/www/api/v1/interface/index.php(3): APIEndpoint->listen()
#5 {main}
  thrown