Remove scanner_type argument from GraphQL mutation

There's no such a thing as scanner_type anywhere in the database. We
have a report_type which we're setting to `generic` if the Vulnerability
is created via this GraphQL migration. This was agreed on in
https://gitlab.com/gitlab-org/gitlab/-/issues/10272#note_577520606

This doesn't need to follow any deprecation process since it wasn't
released yet and is under a feature flag.

Changelog: changed
EE: true

doc/api/graphql/reference/index.md

@@ -4478,7 +4478,6 @@ Input type: `VulnerabilityCreateInput`
 | <a id="mutationvulnerabilitycreateproject"></a>`project` | [`ProjectID!`](#projectid) | ID of the project to attach the vulnerability to. |
 | <a id="mutationvulnerabilitycreateresolvedat"></a>`resolvedAt` | [`Time`](#time) | Timestamp of when the vulnerability state changed to resolved (defaults to creation time if status is `resolved`). |
 | <a id="mutationvulnerabilitycreatescannername"></a>`scannerName` | [`String!`](#string) | Name of the security scanner used to discover the vulnerability. |
-| <a id="mutationvulnerabilitycreatescannertype"></a>`scannerType` | [`SecurityScannerType!`](#securityscannertype) | Type of the security scanner used to discover the vulnerability. |
 | <a id="mutationvulnerabilitycreateseverity"></a>`severity` | [`VulnerabilitySeverity`](#vulnerabilityseverity) | Severity of the vulnerability (defaults to `unknown`). |
 | <a id="mutationvulnerabilitycreatesolution"></a>`solution` | [`String`](#string) | How to fix this vulnerability. |
 | <a id="mutationvulnerabilitycreatestate"></a>`state` | [`VulnerabilityState`](#vulnerabilitystate) | State of the vulnerability (defaults to `detected`). |

ee/app/graphql/mutations/vulnerabilities/create.rb

@@ -19,10 +19,6 @@ module Mutations
         required: true,
         description: 'Description of the vulnerability.'
 
-      argument :scanner_type, Types::SecurityScannerTypeEnum,
-        required: true,
-        description: 'Type of the security scanner used to discover the vulnerability.'
-
       argument :scanner_name, GraphQL::Types::String,
         required: true,
         description: 'Name of the security scanner used to discover the vulnerability.'
@@ -118,8 +114,7 @@ module Mutations
         ])
 
         scanner_params = {
-          name: params.fetch(:scanner_name),
-          type: params.fetch(:scanner_type)
+          name: params.fetch(:scanner_name)
         }
 
         {

ee/spec/graphql/mutations/vulnerabilities/create_spec.rb

@@ -32,7 +32,6 @@ RSpec.describe Mutations::Vulnerabilities::Create do
           project: project_gid,
           title: "Test vulnerability",
           description: "Test vulnerability created via GraphQL",
-          scanner_type: "dast",
           scanner_name: "My custom DAST scanner",
           identifiers: [identifier_attributes],
           state: "detected",
@@ -74,7 +73,6 @@ RSpec.describe Mutations::Vulnerabilities::Create do
           project: project_gid,
           title: "Test vulnerability",
           description: "Test vulnerability created via GraphQL",
-          scanner_type: "dast",
           scanner_name: "My custom DAST scanner",
           identifiers: [identifier_attributes],
           state: "detected",
@@ -122,7 +120,6 @@ RSpec.describe Mutations::Vulnerabilities::Create do
                 project: project_gid,
                 title: "Test vulnerability",
                 description: "Test vulnerability created via GraphQL",
-                scanner_type: "dast",
                 scanner_name: "My custom DAST scanner",
                 identifiers: [identifier_attributes],
                 state: state,