fix: Make packages/medusa/src/services/oauth.js pass linting (#604)

packages/medusa/src/services/oauth.js

@@ -1,5 +1,4 @@
-import _ from "lodash"
-import { Validator, MedusaError } from "medusa-core-utils"
+import { MedusaError } from "medusa-core-utils"
 import { OauthService } from "medusa-interfaces"
 
 class Oauth extends OauthService {
@@ -85,7 +84,7 @@ class Oauth extends OauthService {
 
     return this.update(app.id, {
       data: authData,
-    }).then(result => {
+    }).then((result) => {
       this.eventBus_.emit(
         `${Oauth.Events.TOKEN_GENERATED}.${appName}`,
         authData
@@ -109,7 +108,7 @@ class Oauth extends OauthService {
 
     return this.update(app.id, {
       data: authData,
-    }).then(result => {
+    }).then((result) => {
       this.eventBus_.emit(
         `${Oauth.Events.TOKEN_REFRESHED}.${appName}`,
         authData