remove unnecessary destroy method

README.md

@@ -269,7 +269,6 @@ Misc methods:
 * `realloc(minBytes)` - pad the underlying buffer size to accommodate the given number of bytes;
    note that the size increases exponentially, so it won't necessarily equal the size of data written
 * `finish()` - make the current buffer ready for reading and return the data as a buffer slice
-* `destroy()` - dispose the buffer
 
 For an example of a real-world usage of the library, see [vector-tile-js](https://github.com/mapbox/vector-tile-js).
 

index.js

@@ -21,11 +21,6 @@ export default class Pbf {
         this.length = this.buf.length;
     }
 
-    destroy() {
-        this.buf = null;
-        this.dataView = null;
-    }
-
     // === READING =================================================================
 
     readFields(readField, result, end = this.length) {

test/pbf.test.js

@@ -14,7 +14,6 @@ function toArray(buf) {
 
 test('initialization', () => {
     const buf = new Pbf(Buffer.alloc(0));
-    buf.destroy();
 });
 
 test('realloc', () => {