Remove two non-used source files

[micalevisk]

As of now, only the following files are exposed:

nest-storage/lib/index.ts

Lines 1 to 4 in add9803

	export * from './module';
	export * from './storage';
	export * from './drivers';
	export * from './interfaces';

while the source has theses:

.
├── lib
│   ├── constants.ts
│   ├── driverManager.ts
│   ├── drivers
│   │   ├── index.ts
│   │   ├── local.ts
│   │   └── s3Storage.ts
│   ├── helpers
│   │   ├── extensions.ts
│   │   └── index.ts
│   ├── index.ts
│   ├── interfaces
│   │   ├── fileOptions.ts
│   │   ├── index.ts
│   │   ├── storageDriver.ts
│   │   └── storageOptions.ts
│   ├── module.ts
│   ├── provider.map.ts
│   ├── service.ts
│   ├── storage.module.ts   <<<<<<<<<<<<<
│   ├── storage.service.ts  <<<<<<<<<<<<<
│   └── storage.ts

To confirm that those two storage.* files aren't used anywhere:

[vinayak25]

Thanks for reporting this, will be removed in next release.