fix: simplify type for v3 and v5

Author: broofa

src/v3.ts

@@ -4,18 +4,6 @@ import v35, { DNS, URL } from './v35.js';
 
 export { DNS, URL } from './v35.js';
 
-function v3(
-  value: string | Uint8Array,
-  namespace: UUIDTypes,
-  buf?: undefined,
-  offset?: number
-): string;
-function v3(
-  value: string | Uint8Array,
-  namespace: UUIDTypes,
-  buf: Uint8Array,
-  offset?: number
-): Uint8Array;
 function v3(value: string | Uint8Array, namespace: UUIDTypes, buf?: Uint8Array, offset?: number) {
   return v35(0x30, md5, value, namespace, buf, offset);
 }

src/v5.ts

@@ -4,18 +4,6 @@ import v35, { DNS, URL } from './v35.js';
 
 export { DNS, URL } from './v35.js';
 
-function v5(
-  value: string | Uint8Array,
-  namespace: UUIDTypes,
-  buf?: undefined,
-  offset?: number
-): string;
-function v5(
-  value: string | Uint8Array,
-  namespace: UUIDTypes,
-  buf: Uint8Array,
-  offset?: number
-): Uint8Array;
 function v5(value: string | Uint8Array, namespace: UUIDTypes, buf?: Uint8Array, offset?: number) {
   return v35(0x50, sha1, value, namespace, buf, offset);
 }