refactor: remove unwanted difference utility method

providers/DatabaseProvider.ts

@@ -41,7 +41,7 @@ export default class DatabaseServiceProvider {
     })
 
     this.$container.singleton('Adonis/Lucid/Orm', () => {
-      const config = this.$container.use('Adonis/Core/Config').get('database.ormConfig', {})
+      const config = this.$container.use('Adonis/Core/Config').get('database.orm', {})
 
       /**
        * Attaching adapter to the base model. Each model is allowed to define

src/utils/index.ts

@@ -90,18 +90,6 @@ export function unique (value: any[]) {
   return [...new Set(value)]
 }
 
-/**
- * Finds the diff between 2 arrays
- */
-export function difference (main: any[], other: []) {
-  return [main, other].reduce((a, b) => {
-    return a.filter(c => {
-      /* eslint-disable-next-line eqeqeq */
-      return !b.find((one) => c == one)
-    })
-  })
-}
-
 /**
  * Returns a diff of rows to be updated or inserted when performing
  * a many to many `attach`