remove session handling code

Author: baileympearson

src/db.ts

@@ -238,15 +238,8 @@ export class Db {
     name: string,
     options?: CreateCollectionOptions
   ): Promise<Collection<TSchema>> {
-    options = resolveOptions(this, { ...options });
-    if (options.session) {
-      return await createCollections<TSchema>(this, name, options);
-    }
-
-    return await this.client.withSession({ explicit: false }, async session => {
-      options.session = session;
-      return await createCollections<TSchema>(this, name, options);
-    });
+    options = resolveOptions(this, options);
+    return await createCollections<TSchema>(this, name, options);
   }
 
   /**
@@ -361,13 +354,13 @@ export class Db {
   ): ListCollectionsCursor<CollectionInfo>;
   listCollections<
     T extends Pick<CollectionInfo, 'name' | 'type'> | CollectionInfo =
-      | Pick<CollectionInfo, 'name' | 'type'>
-      | CollectionInfo
+    | Pick<CollectionInfo, 'name' | 'type'>
+    | CollectionInfo
   >(filter?: Document, options?: ListCollectionsOptions & Abortable): ListCollectionsCursor<T>;
   listCollections<
     T extends Pick<CollectionInfo, 'name' | 'type'> | CollectionInfo =
-      | Pick<CollectionInfo, 'name' | 'type'>
-      | CollectionInfo
+    | Pick<CollectionInfo, 'name' | 'type'>
+    | CollectionInfo
   >(
     filter: Document = {},
     options: ListCollectionsOptions & Abortable = {}
@@ -412,15 +405,8 @@ export class Db {
    * @param options - Optional settings for the command
    */
   async dropCollection(name: string, options?: DropCollectionOptions): Promise<boolean> {
-    options = resolveOptions(this, { ...options });
-    if (options.session) {
-      return await dropCollections(this, name, options);
-    }
-
-    return await this.client.withSession({ explicit: false }, async session => {
-      options.session = session;
-      return await dropCollections(this, name, options);
-    });
+    options = resolveOptions(this, options);
+    return await dropCollections(this, name, options);
   }
 
   /**