Deleted dead code.

src/services/interfaces.ts

@@ -35,6 +35,5 @@ export interface BlobService {
     persistReader(index: string, content: Deno.Reader): Promise<number>;
     readAllBlob(index: string): Promise<Uint8Array>;
     getBlob(index: string): Deno.Reader;
-    getNumberOfBlobs(index: string): Promise<number>;
-    streamBlob(index: string): Deno.Reader;
+    getNumberOfChunks(index: string): Promise<number>;
 }