[skip ci] remove unused config fields

Author: dem1fo

examples/programmatic_usage.ts

@@ -1,14 +1,8 @@
 // REPLACE ALL REFERENCES TO "_generic_hasher" WITH THE DESIRED ALGORITHM IN THE ALGORITHMS DIRECTORY.
-
-import { dirname, join } from 'node:path';
-import { fileURLToPath } from 'node:url';
-
 import { generateHashesForDocument, validateDocument, type CidDocument, type Config } from '../src/index';
 import { SUPPORTED_VALIDATORS } from '../src/validation/Validation';
 import { makeHasher } from './example_algorithm/_generic_hasher';
 
-const __dirname = dirname(fileURLToPath(import.meta.url));
-
 /*
   Construct a config object instructing the algorithm HOW to process the data being passed
   in. This contains rules related to source schema, target schemas, validation rules, and
@@ -18,9 +12,8 @@ const __dirname = dirname(fileURLToPath(import.meta.url));
 */
 const config: Config.Options = {
   meta: {
-    region: "UNKONWN", // this must match the shortCode of the algorithm being used
-    version: "",
-    signature: ""
+    // this must match the shortCode of the algorithm being used
+    region: "UNKONWN"
   },
   // the schema information for the source data
   source: {