DELETE requests don't send with formData

[STRML]

swagger-js/lib/types/operation.js

Line 795 in 57fdc0d

((this.method === 'delete' || this.method === 'get') && body) ) {

checks for a non-null body, but it also must check for definedFormParams.length > 0. Otherwise, DELETE methods with a form body fail to send.

[fehguy]

Confirmed this is fixed from #936